ASTROSAT CZTI

Data Quality Report

Orbit 56706

Creation date: 2026-03-22T17:18:45.653689
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/AS1A14_083T06_9000006558_56706cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56706cztM0_level2_quad_clean.evt
Size (bytes)514,463,04090,653,760
Size490.6 MB 86.5 MB
Events in quadrant A4,088,936609,417
Events in quadrant B6,748,376585,092
Events in quadrant C4,409,124544,294
Events in quadrant D3,298,151557,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164261
B0244671
C0178031
D0142851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64252413.750973%
B642598815.377432%
C64256219.665370%
D64261211.882975%

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 7275 6425 156 156 2.14% 2.43%
B 7275 6425 737 737 10.13% 11.47%
C 7275 6425 499 499 6.86% 7.77%
D 7276 6427 63 63 0.87% 0.98%

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 3 14 631488 3670.4 687 670 171.9
A 3 62 571291 3320.14 687 670 171.9
A 8 26 108042 624.74 687 670 171.9
B 5 185 3710857 26286.39 655 633 141.1
B 0 63 87200 613.31 655 633 141.1
B 4 236 62092 435.43 655 633 141.1
C 15 230 1558779 8862.63 643 635 175.8
C 13 3 99596 562.88 643 635 175.8
C 14 96 35588 198.81 643 635 175.8
D 2 249 243121 1267.3 672 641 191.3
D 6 239 174297 907.59 672 641 191.3
D 5 173 61994 320.65 672 641 191.3

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