ASTROSAT CZTI

Data Quality Report

Orbit 52131

Creation date: 2025-05-18T17:36:03.546157
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_011T07_9000006470_52131cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52131cztM0_level2_quad_clean.evt
Size (bytes)827,714,88069,151,680
Size789.4 MB 65.9 MB
Events in quadrant A4,161,483545,410
Events in quadrant B3,856,930599,280
Events in quadrant C7,710,689437,844
Events in quadrant D14,442,09789,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01222
B01211
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01639331
B01576562
C02719086
D047189183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60493515.802612%
B60442083.441430%
C6044147624.420913%
D6037520586.218320%

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 7003 6055 286 286 4.08% 4.72%
B 7004 6049 92 92 1.31% 1.52%
C 7004 6049 1182 1182 16.88% 19.54%
D 7003 6044 4847 4847 69.21% 80.20%

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 12 115 460317 2965.1 628 614 155.0
A 4 95 270808 1742.76 628 614 155.0
A 7 206 226325 1455.84 628 614 155.0
B 5 172 447103 3365.47 626 607 132.7
B 4 81 193277 1452.25 626 607 132.7
B 0 216 169990 1276.73 626 607 132.7
C 15 224 3817158 24795.32 555 550 153.9
C 0 161 464919 3016.86 555 550 153.9
C 4 5 272846 1769.02 555 550 153.9
D 6 42 8005436 84868.59 323 307 94.3
D 15 94 3331463 35316.17 323 307 94.3
D 0 18 511054 5414.83 323 307 94.3

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