ASTROSAT CZTI

Data Quality Report

Orbit 20201126_A10_049T01_9000004032_level2

Creation date: 2025-12-17T22:18:39.341643
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/AS1A10_049T01_9000004032cztM0_level2.fits modeM0/AS1A10_049T01_9000004032cztM0_level2_quad_clean.evt
Size (bytes)934,254,720834,848,640
Size891.0 MB 796.2 MB
Events in quadrant A5,940,0845,110,035
Events in quadrant B5,599,5844,994,936
Events in quadrant C5,648,7364,711,669
Events in quadrant D4,897,7344,258,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018400
B018400
C018400
D018400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01929470
B02120310
C02003200
D02777310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9057310731.184680%
B9057321922.420147%
C9057321092.328508%
D9057341664.599605%

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 105993 90560 0 0 0.00% 0.00%
B 105993 90559 0 0 0.00% 0.00%
C 105993 90556 0 0 0.00% 0.00%
D 105993 90532 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 4823 9.16 1547 1464 366.7
A 7 110 4645 8.67 1547 1464 366.7
A 9 19 4398 8.0 1547 1464 366.7
B 2 9 4324 10.18 1484 1424 284.9
B 5 128 3729 8.09 1484 1424 284.9
B 14 254 3610 7.67 1484 1424 284.9
C 1 81 4367 7.94 1492 1407 372.8
C 1 80 4313 7.8 1492 1407 372.8
C 12 241 3885 6.65 1492 1407 372.8
D 6 67 3564 6.23 1400 1283 365.9
D 10 189 3522 6.12 1400 1283 365.9
D 6 231 3436 5.88 1400 1283 365.9

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