ASTROSAT CZTI

Data Quality Report

Orbit 57954

Creation date: 2026-06-14T16:36:58.155032
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_031T01_9000006584_57954cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57954cztM0_level2_quad_clean.evt
Size (bytes)1,473,122,880287,804,160
Size1.4 GB 274.5 MB
Events in quadrant A10,059,4281,906,526
Events in quadrant B10,354,6332,017,029
Events in quadrant C13,924,4901,774,634
Events in quadrant D18,589,7041,588,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0446565
B0452722
C0556712
D0699992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207145662.732451%
B207176703.234059%
C207179174.426317%
D2071717978.674036%

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 21681 20718 83 83 0.38% 0.40%
B 21682 20720 74 74 0.34% 0.36%
C 21682 20720 448 448 2.07% 2.16%
D 21682 20720 1329 1329 6.13% 6.41%

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 4 3 272605 478.69 2315 2256 564.8
A 6 161 233282 409.06 2315 2256 564.8
A 3 245 210902 369.44 2315 2256 564.8
B 0 213 251365 506.94 2279 2187 491.5
B 10 128 251149 506.5 2279 2187 491.5
B 10 247 176582 354.79 2279 2187 491.5
C 15 224 2937974 4912.9 2229 2215 597.6
C 1 16 1295854 2164.86 2229 2215 597.6
C 12 252 346626 576.36 2229 2215 597.6
D 12 110 6522437 10739.59 2168 2075 607.1
D 2 249 2201613 3622.83 2168 2075 607.1
D 8 240 653967 1073.72 2168 2075 607.1

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