ASTROSAT CZTI

Data Quality Report

Orbit 17218

Creation date: 2024-06-27T17:33:42.672525
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_185T04_9000002548_17218cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17218cztM0_level2_quad_clean.evt
Size (bytes)1,367,432,640229,331,520
Size1.3 GB 218.7 MB
Events in quadrant A8,448,9461,454,398
Events in quadrant B8,888,4291,455,350
Events in quadrant C10,951,8251,384,807
Events in quadrant D11,868,2141,370,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376454
B0385134
C0448685
D0476334

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185861850.995373%
B185872751.479529%
C185863171.705585%
D185866043.249758%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 20351 18589 0 0 0.00% 0.00%
B 20352 18590 55 55 0.27% 0.30%
C 20351 18589 0 0 0.00% 0.00%
D 20351 18588 382 382 1.88% 2.06%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 226 19502 39.21 2194 2142 442.8
A 3 137 16321 32.02 2194 2142 442.8
A 12 194 16077 31.47 2194 2142 442.8
B 7 220 187043 441.64 2182 2121 418.7
B 12 111 50804 116.27 2182 2121 418.7
B 0 197 50644 115.88 2182 2121 418.7
C 3 233 2447828 4996.49 2094 2105 489.5
C 14 238 321697 652.91 2094 2105 489.5
C 13 61 15072 26.49 2094 2105 489.5
D 5 222 2718836 5270.85 2116 2052 515.4
D 1 52 465251 898.65 2116 2052 515.4
D 13 189 241131 463.84 2116 2052 515.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter