ASTROSAT CZTI

Data Quality Report

Orbit 58201

Creation date: 2026-07-01T10:27:32.529653
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_042T02_9000006586_58201cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58201cztM0_level2_quad_clean.evt
Size (bytes)1,725,027,840338,086,080
Size1.6 GB 322.4 MB
Events in quadrant A13,494,0102,175,014
Events in quadrant B21,057,8502,269,117
Events in quadrant C10,476,9532,170,551
Events in quadrant D16,972,7101,972,309

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0581093
B0788533
C0493753
D0675703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2397213745.731687%
B2397421518.972220%
C23974500.208559%
D2397313275.535394%

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 31990 23976 1215 1215 3.80% 5.07%
B 31991 23978 1481 1481 4.63% 6.18%
C 31991 23978 19 19 0.06% 0.08%
D 31990 23977 1193 1193 3.73% 4.98%

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 7 64 3573110 5691.92 2530 2465 627.3
A 4 3 74820 115.34 2530 2465 627.3
A 3 245 65394 100.31 2530 2465 627.3
B 10 128 7697541 14577.67 2477 2379 527.9
B 2 249 1969582 3726.66 2477 2379 527.9
B 10 247 339508 638.65 2477 2379 527.9
C 12 252 354967 514.43 2512 2494 685.2
C 6 223 88167 125.04 2512 2494 685.2
C 12 250 76119 107.46 2512 2494 685.2
D 12 110 2682089 3846.3 2450 2343 696.7
D 8 160 1413427 2025.36 2450 2343 696.7
D 7 222 1025054 1467.92 2450 2343 696.7

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