ASTROSAT CZTI

Data Quality Report

Orbit 57188

Creation date: 2026-04-24T01:55:39.231736
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_070T08_9000006568_57188cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57188cztM0_level2_quad_clean.evt
Size (bytes)409,544,64089,159,040
Size390.6 MB 85.0 MB
Events in quadrant A2,581,076599,587
Events in quadrant B3,811,122611,909
Events in quadrant C4,525,905542,361
Events in quadrant D3,766,657519,528

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123771
B0156591
C0177201
D0155451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6106140.229283%
B61063435.617425%
C61063355.486407%
D61071642.685443%

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 7216 6107 3 3 0.04% 0.05%
B 7216 6107 252 252 3.49% 4.13%
C 7216 6107 308 308 4.27% 5.04%
D 7217 6108 154 154 2.13% 2.52%

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 14 23816 143.16 651 634 161.9
A 4 3 19078 113.9 651 634 161.9
A 10 251 15111 89.4 651 634 161.9
B 10 16 935765 6967.13 629 606 134.2
B 4 201 129111 957.39 629 606 134.2
B 5 185 60093 443.19 629 606 134.2
C 15 224 1736698 10408.6 608 602 166.8
C 12 2 121958 727.58 608 602 166.8
C 14 254 88788 528.71 608 602 166.8
D 2 249 369525 2103.81 611 581 175.4
D 12 33 345801 1968.53 611 581 175.4
D 8 240 265733 1511.96 611 581 175.4

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