ASTROSAT CZTI

Data Quality Report

Orbit 58885

Creation date: 2026-08-16T08:36:08.782845
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_58885cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58885cztM0_level2_quad_clean.evt
Size (bytes)525,758,400100,946,880
Size501.4 MB 96.3 MB
Events in quadrant A4,350,013665,117
Events in quadrant B3,588,796709,160
Events in quadrant C5,361,539617,451
Events in quadrant D5,616,566575,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176742
B0157213
C0207212
D0217192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70201271.809117%
B70191872.664197%
C70205217.421652%
D70204916.994302%

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 7785 7021 65 65 0.83% 0.93%
B 7784 7020 106 106 1.36% 1.51%
C 7785 7021 517 517 6.64% 7.36%
D 7785 7021 461 461 5.92% 6.57%

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 620843 3296.28 761 741 188.1
A 4 249 445931 2366.5 761 741 188.1
A 15 233 238389 1263.27 761 741 188.1
B 4 236 215211 1312.72 754 725 163.4
B 4 201 124555 757.88 754 725 163.4
B 10 247 62965 380.93 754 725 163.4
C 12 252 2018004 10029.39 731 725 201.1
C 3 233 209331 1037.14 731 725 201.1
C 6 223 124383 614.8 731 725 201.1
D 11 129 1581858 7634.04 726 692 207.1
D 12 110 674957 3255.43 726 692 207.1
D 13 138 96501 462.58 726 692 207.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct