ASTROSAT CZTI

Data Quality Report

Orbit 31265

Creation date: 2024-06-27T20:25:56.472659
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_021T01_9000004526_31265cztM0_level2.evt modeM0/AS1T04_021T01_9000004526_31265cztM0_level2_quad_clean.evt
Size (bytes)232,372,80033,727,680
Size221.6 MB 32.2 MB
Events in quadrant A1,405,234220,029
Events in quadrant B2,109,899212,066
Events in quadrant C1,560,386208,867
Events in quadrant D1,796,557206,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06177320
B08446583
C06871550
D07544517

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0152
C0130
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0536
C0542
D0542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2438672.748154%
B23881265.276382%
C23911496.231702%
D24061345.569410%

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 3859 2545 0 0 0.00% 0.00%
B 3865 2528 2 2 0.05% 0.08%
C 3864 2525 16 16 0.41% 0.63%
D 3866 2528 89 89 2.30% 3.52%

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 13 254 4341 54.44 364 358 73.2
A 3 137 3255 39.6 364 358 73.2
A 0 226 3181 38.59 364 358 73.2
B 6 159 636975 9489.11 350 342 67.1
B 0 245 55466 821.63 350 342 67.1
B 0 190 23950 351.88 350 342 67.1
C 3 233 94070 1205.68 335 338 77.7
C 0 10 86827 1112.51 335 338 77.7
C 14 238 56577 723.41 335 338 77.7
D 8 195 448460 5186.54 346 338 86.4
D 12 79 17841 202.58 346 338 86.4
D 2 234 9221 102.81 346 338 86.4

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