ASTROSAT CZTI

Data Quality Report

Orbit 57634

Creation date: 2026-05-25T09:26:54.212968
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_070T08_9000006576_57634cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57634cztM0_level2_quad_clean.evt
Size (bytes)895,772,160159,701,760
Size854.3 MB 152.3 MB
Events in quadrant A6,449,8921,039,678
Events in quadrant B6,516,0281,030,756
Events in quadrant C8,730,1191,018,929
Events in quadrant D10,424,583820,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290231
B0291991
C0356261
D0402591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133891781.329450%
B133893132.337740%
C133885053.772035%
D13389151211.292852%

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 14094 13680 55 55 0.39% 0.40%
B 14094 13680 62 62 0.44% 0.45%
C 14093 13679 333 333 2.36% 2.43%
D 14094 13680 1202 1202 8.53% 8.79%

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 7 64 422865 1190.74 1446 1412 353.9
A 4 249 191263 536.39 1446 1412 353.9
A 10 251 66488 183.86 1446 1412 353.9
B 0 213 255513 836.34 1423 1369 303.9
B 10 247 144452 470.86 1423 1369 303.9
B 7 252 114592 372.59 1423 1369 303.9
C 15 224 2564583 6799.06 1384 1367 377.0
C 12 2 217855 574.24 1384 1367 377.0
C 10 22 166765 438.73 1384 1367 377.0
D 2 249 2049162 5536.21 1306 1248 369.9
D 15 142 1063704 2872.18 1306 1248 369.9
D 3 12 493224 1329.98 1306 1248 369.9

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