ASTROSAT CZTI

Data Quality Report

Orbit 20170531_A03_046T01_9000001260_level2

Creation date: 2025-11-13T22:13:14.714420
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/AS1A03_046T01_9000001260cztM0_level2.fits modeM0/AS1A03_046T01_9000001260cztM0_level2_quad_clean.evt
Size (bytes)801,607,680844,833,600
Size764.5 MB 805.7 MB
Events in quadrant A5,183,2905,561,201
Events in quadrant B3,581,1693,842,387
Events in quadrant C5,178,0735,334,672
Events in quadrant D4,429,3604,948,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018720
B018660
C018620
D019020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01480
C01490
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02167800
B01409880
C01902240
D02201920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9217121032.281629%
B6606211021.668130%
C9239111331.226310%
D9189528393.089396%

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 114245 94990 0 0 0.00% 0.00%
B 81938 67687 0 0 0.00% 0.00%
C 114245 95109 0 0 0.00% 0.00%
D 114245 94819 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 0 29 5000 10.95 1351 1267 341.0
A 7 110 4294 8.88 1351 1267 341.0
A 0 30 3873 7.64 1351 1267 341.0
B 2 9 3127 11.96 945 901 186.1
B 14 254 2491 8.54 945 901 186.1
B 3 17 2359 7.83 945 901 186.1
C 1 80 3824 7.21 1366 1271 353.9
C 1 81 3800 7.15 1366 1271 353.9
C 12 241 3756 7.02 1366 1271 353.9
D 3 14 3282 6.39 1262 1151 333.4
D 6 231 3272 6.36 1262 1151 333.4
D 10 189 3189 6.11 1262 1151 333.4

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