ASTROSAT CZTI

Data Quality Report

Orbit 57534

Creation date: 2026-05-17T10:40:50.691079
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/AS1A14_113T09_9000006574_57534cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57534cztM0_level2_quad_clean.evt
Size (bytes)1,396,929,600323,691,840
Size1.3 GB 308.7 MB
Events in quadrant A9,968,5312,130,322
Events in quadrant B10,905,7292,257,791
Events in quadrant C16,100,8541,947,692
Events in quadrant D12,965,2241,891,640

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04640
C04640
D04640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472014
B0487264
C0640584
D0548494

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228581220.533730%
B228583121.364949%
C2285811154.877942%
D228584521.977426%

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 25738 23136 20 20 0.08% 0.09%
B 25738 23135 82 82 0.32% 0.35%
C 25738 23136 846 846 3.29% 3.66%
D 25738 23136 338 338 1.31% 1.46%

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 3 14 234209 387.7 2446 2385 597.9
A 13 248 55516 88.86 2446 2385 597.9
A 10 251 49159 78.23 2446 2385 597.9
B 5 185 223452 431.09 2408 2311 513.0
B 7 252 212889 410.49 2408 2311 513.0
B 4 206 208760 402.45 2408 2311 513.0
C 15 224 5227876 8199.15 2340 2311 637.3
C 12 252 1061667 1662.18 2340 2311 637.3
C 9 38 169562 262.42 2340 2311 637.3
D 15 94 658578 982.27 2358 2246 668.2
D 8 160 593373 884.69 2358 2246 668.2
D 15 142 579082 863.3 2358 2246 668.2

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