ASTROSAT CZTI

Data Quality Report

Orbit 58910

Creation date: 2026-08-17T23:12:27.424517
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_004T07_9000006598_58910cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58910cztM0_level2_quad_clean.evt
Size (bytes)761,630,40091,114,560
Size726.3 MB 86.9 MB
Events in quadrant A7,324,098605,848
Events in quadrant B3,920,152713,694
Events in quadrant C4,144,363640,606
Events in quadrant D12,261,744310,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265090
B0165540
C0174150
D0412850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A700099614.228571%
B70002363.371429%
C70002153.071429%
D7000373353.328571%

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 7000 7000 911 911 13.01% 13.01%
B 7000 7000 135 135 1.93% 1.93%
C 7000 7000 170 170 2.43% 2.43%
D 7000 7000 3073 3073 43.90% 43.90%

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 14 238 4036551 21510.74 750 730 187.6
A 3 14 85083 449.6 750 730 187.6
A 13 248 78920 416.75 750 730 187.6
B 4 171 234782 1424.23 763 734 164.3
B 5 185 159384 965.41 763 734 164.3
B 4 236 85994 518.82 763 734 164.3
C 12 252 836563 4036.08 750 743 207.1
C 6 13 200156 962.94 750 743 207.1
C 15 219 42973 203.92 750 743 207.1
D 12 110 9579938 58052.6 578 551 165.0
D 7 222 117188 706.84 578 551 165.0
D 2 120 45359 271.54 578 551 165.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct