ASTROSAT CZTI

Data Quality Report

Orbit 53190

Creation date: 2025-07-29T03:10:14.672153
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/AS1C09_011T06_9000006490_53190cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53190cztM0_level2_quad_clean.evt
Size (bytes)823,988,16068,924,160
Size785.8 MB 65.7 MB
Events in quadrant A3,246,846587,816
Events in quadrant B2,965,044620,648
Events in quadrant C7,912,711432,305
Events in quadrant D15,902,66519,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139991
B0132531
C0277431
D0514478

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110560.916530%
B6111490.801833%
C6111150224.578629%
D6110594997.364975%

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 7070 6110 29 29 0.41% 0.47%
B 7071 6111 25 25 0.35% 0.41%
C 7071 6111 1500 1500 21.21% 24.55%
D 7069 6109 5841 5841 82.63% 95.61%

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 139216 873.39 635 619 158.7
A 12 80 103317 647.16 635 619 158.7
A 15 174 90268 564.93 635 619 158.7
B 10 254 108777 811.96 630 607 133.2
B 10 247 73275 545.47 630 607 133.2
B 8 128 41427 306.41 630 607 133.2
C 1 241 2789079 18270.32 554 549 152.6
C 15 224 1814048 11881.96 554 549 152.6
C 10 22 308720 2019.12 554 549 152.6
D 15 125 14809089 246504.89 205 196 60.1
D 2 120 33777 558.98 205 196 60.1
D 13 170 32687 540.84 205 196 60.1

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