ASTROSAT CZTI

Data Quality Report

Orbit 33311

Creation date: 2024-06-27T20:47:21.873984
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/AS1T04_072T01_9000004780_33311cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33311cztM0_level2_quad_clean.evt
Size (bytes)544,060,80082,814,400
Size518.9 MB 79.0 MB
Events in quadrant A2,649,449558,033
Events in quadrant B4,167,487530,125
Events in quadrant C5,225,924508,209
Events in quadrant D4,057,090521,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113783
B0159052
C0191702
D0159272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5576110.197274%
B55763726.671449%
C55764097.335007%
D55761202.152080%

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 7189 5577 1 1 0.01% 0.02%
B 7189 5577 275 275 3.83% 4.93%
C 7189 5577 376 376 5.23% 6.74%
D 7189 5577 92 92 1.28% 1.65%

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 15 47 41649 309.62 663 651 132.4
A 15 169 35910 266.28 663 651 132.4
A 13 254 9941 70.16 663 651 132.4
B 5 172 1209489 10044.43 639 622 120.4
B 0 219 229317 1900.22 639 622 120.4
B 4 170 33916 276.64 639 622 120.4
C 1 23 1066341 7401.73 622 626 144.0
C 10 49 909951 6315.55 622 626 144.0
C 0 207 294954 2044.2 622 626 144.0
D 8 195 837671 5098.42 637 624 164.2
D 2 250 194419 1180.4 637 624 164.2
D 12 233 149781 908.51 637 624 164.2

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