ASTROSAT CZTI

Data Quality Report

Orbit 20220905_A09_061T01_9000005330_level2

Creation date: 2026-01-05T05:20:50.557810
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/AS1A09_061T01_9000005330cztM0_level2.fits modeM0/AS1A09_061T01_9000005330cztM0_level2_quad_clean.evt
Size (bytes)674,435,520721,339,200
Size643.2 MB 687.9 MB
Events in quadrant A4,255,0564,502,363
Events in quadrant B4,047,3544,489,398
Events in quadrant C4,230,0854,343,564
Events in quadrant D2,819,2773,443,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015210
C015210
D015220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03030
C03040
D03050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01697210
B01764410
C01674250
D02620560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A738605430.735175%
B7393522032.979644%
C7386910271.390299%
D737601189316.123915%

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 116483 74331 0 0 0.00% 0.00%
B 116483 74319 0 0 0.00% 0.00%
C 116483 74286 0 0 0.00% 0.00%
D 116483 71734 0 0 0.00% 0.00%

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 9 19 3495 8.88 1113 1045 275.8
A 0 29 3434 8.66 1113 1045 275.8
A 7 110 3308 8.21 1113 1045 275.8
B 2 9 3460 11.47 1077 1028 212.0
B 3 80 3259 10.53 1077 1028 212.0
B 3 17 2867 8.68 1077 1028 212.0
C 1 81 3663 9.13 1120 1053 285.9
C 1 80 3438 8.34 1120 1053 285.9
C 3 202 3351 8.04 1120 1053 285.9
D 10 189 2195 7.21 807 745 201.0
D 7 3 2002 6.25 807 745 201.0
D 4 160 1987 6.18 807 745 201.0

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