ASTROSAT CZTI

Data Quality Report

Orbit 58617

Creation date: 2026-07-29T05:40:44.238440
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_004T06_9000006594_58617cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58617cztM0_level2_quad_clean.evt
Size (bytes)565,136,64094,029,120
Size539.0 MB 89.7 MB
Events in quadrant A4,462,452606,213
Events in quadrant B4,428,710646,143
Events in quadrant C7,626,857529,380
Events in quadrant D3,859,217578,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181733
B0180692
C0275172
D0163242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69873515.023615%
B69873615.166738%
C6987111715.986833%
D69871151.645914%

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 7857 7183 290 290 3.69% 4.04%
B 7857 7183 167 167 2.13% 2.32%
C 7857 7183 926 926 11.79% 12.89%
D 7857 7183 76 76 0.97% 1.06%

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 10 17 1254839 6797.31 741 720 184.5
A 12 114 198833 1073.77 741 720 184.5
A 10 251 74344 399.04 741 720 184.5
B 6 255 553152 3521.87 734 707 156.9
B 8 234 418592 2664.04 734 707 156.9
B 4 171 122911 779.06 734 707 156.9
C 15 217 3206830 16787.42 692 683 191.0
C 13 3 1122100 5871.75 692 683 191.0
C 4 5 220773 1152.39 692 683 191.0
D 2 62 212320 1006.09 735 701 210.3
D 7 222 151709 717.93 735 701 210.3
D 8 240 138007 652.79 735 701 210.3

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