ASTROSAT CZTI

Data Quality Report

Orbit 36700

Creation date: 2024-06-27T21:30:28.936728
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/AS1C07_001T09_9000005236_36700cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36700cztM0_level2_quad_clean.evt
Size (bytes)460,457,280108,745,920
Size439.1 MB 103.7 MB
Events in quadrant A2,864,221740,198
Events in quadrant B3,175,657726,907
Events in quadrant C3,447,767719,253
Events in quadrant D4,054,069692,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123813
B0132852
C0138722
D0160042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935160.269587%
B5935671.128896%
C59351242.089301%
D59352474.161752%

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 7279 5936 1 1 0.01% 0.02%
B 7279 5936 46 46 0.63% 0.77%
C 7279 5936 104 104 1.43% 1.75%
D 7279 5936 213 213 2.93% 3.59%

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 10 83 242376 1827.28 660 646 132.3
A 9 143 31968 236.77 660 646 132.3
A 13 6 21081 154.47 660 646 132.3
B 5 255 159443 1302.53 650 635 121.9
B 0 197 103811 846.24 650 635 121.9
B 5 200 74002 601.75 650 635 121.9
C 0 10 372088 2525.51 636 640 147.1
C 14 254 278742 1890.85 636 640 147.1
C 15 214 270607 1835.53 636 640 147.1
D 12 233 493944 3148.23 636 617 156.7
D 13 249 285424 1817.53 636 617 156.7
D 14 52 149751 951.72 636 617 156.7

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