ASTROSAT CZTI

Data Quality Report

Orbit 57374

Creation date: 2026-05-06T15:38:00.907706
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_102T01_9000006572_57374cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57374cztM0_level2_quad_clean.evt
Size (bytes)456,808,32097,914,240
Size435.6 MB 93.4 MB
Events in quadrant A3,062,960645,662
Events in quadrant B3,341,597689,945
Events in quadrant C6,199,901576,094
Events in quadrant D3,773,992576,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140671
B0147621
C0231541
D0158351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6827831.215761%
B68281442.108963%
C682869310.149385%
D68281832.680141%

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 7632 6827 6 6 0.08% 0.09%
B 7633 6828 46 46 0.60% 0.67%
C 7633 6828 563 563 7.38% 8.25%
D 7633 6828 103 103 1.35% 1.51%

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 61 81726 438.26 746 725 184.8
A 10 251 27808 146.53 746 725 184.8
A 13 248 26452 139.2 746 725 184.8
B 5 185 207933 1321.81 730 702 156.8
B 7 252 68942 435.27 730 702 156.8
B 10 247 54656 344.14 730 702 156.8
C 15 224 2565735 13546.55 699 692 189.4
C 8 7 476888 2514.89 699 692 189.4
C 14 254 117468 616.72 699 692 189.4
D 15 142 309881 1521.2 723 691 203.3
D 8 240 252377 1238.29 723 691 203.3
D 3 224 77884 379.79 723 691 203.3

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