ASTROSAT CZTI

Data Quality Report

Orbit 20210105_A10_058T09_9000004100_level2

Creation date: 2025-12-18T22:50:01.964882
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_058T09_9000004100cztM0_level2.fits modeM0/AS1A10_058T09_9000004100cztM0_level2_quad_clean.evt
Size (bytes)848,975,040642,525,120
Size809.6 MB 612.8 MB
Events in quadrant A5,293,4693,581,660
Events in quadrant B5,053,1703,582,778
Events in quadrant C5,164,1543,416,991
Events in quadrant D4,390,6683,068,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017230
B017180
C017380
D017210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01590
C01620
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01965570
B01981120
C01801410
D02685030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8477625302.984335%
B8475524322.869447%
C8467314471.708927%
D8458855086.511562%

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 118346 85527 0 0 0.00% 0.00%
B 118349 85508 0 0 0.00% 0.00%
C 118349 85425 0 0 0.00% 0.00%
D 118348 85155 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 5234 11.79 1380 1300 333.7
A 7 110 4106 8.41 1380 1300 333.7
A 0 30 4076 8.32 1380 1300 333.7
B 2 9 4128 10.79 1340 1280 263.8
B 2 8 3464 8.28 1340 1280 263.8
B 5 128 3403 8.05 1340 1280 263.8
C 1 81 3934 7.7 1363 1274 345.3
C 1 80 3907 7.63 1363 1274 345.3
C 12 241 3599 6.73 1363 1274 345.3
D 3 14 3182 6.06 1255 1146 335.7
D 7 3 3024 5.59 1255 1146 335.7
D 15 47 3007 5.54 1255 1146 335.7

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