ASTROSAT CZTI

Data Quality Report

Orbit 52310

Creation date: 2025-07-22T16:36:05.119744
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/AS1C09_011T05_9000006474_52310cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52310cztM0_level2_quad_clean.evt
Size (bytes)1,492,836,480123,914,880
Size1.4 GB 118.2 MB
Events in quadrant A6,366,5971,001,570
Events in quadrant B9,793,3181,004,242
Events in quadrant C19,510,912458,243
Events in quadrant D18,754,445537,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264142
B0365862
C0654262
D06324010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108274043.731412%
B1082810579.761729%
C10827638358.954466%
D10826493645.593941%

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 12847 10827 253 253 1.97% 2.34%
B 12848 10828 778 778 6.06% 7.19%
C 12846 10827 5396 5396 42.01% 49.84%
D 12846 10826 4782 4782 37.23% 44.17%

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 12 3 348651 1234.51 1122 1093 281.5
A 3 48 266420 942.43 1122 1093 281.5
A 11 3 230813 815.96 1122 1093 281.5
B 10 254 2727277 11892.54 1092 1054 229.2
B 4 171 1061277 4624.99 1092 1054 229.2
B 0 216 443009 1927.93 1092 1054 229.2
C 0 161 6577630 32937.72 727 718 199.7
C 15 224 3994686 20002.12 727 718 199.7
C 9 38 2271119 11370.35 727 718 199.7
D 15 93 8232351 32989.37 855 814 249.5
D 12 2 3411801 13670.15 855 814 249.5
D 13 84 793366 3176.3 855 814 249.5

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