ASTROSAT CZTI

Data Quality Report

Orbit 53748

Creation date: 2025-09-04T14:58:12.085279
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_022T04_9000006506_53748cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53748cztM0_level2_quad_clean.evt
Size (bytes)1,000,607,04061,248,960
Size954.3 MB 58.4 MB
Events in quadrant A16,044,0482,565
Events in quadrant B7,035,470472,241
Events in quadrant C7,795,197454,520
Events in quadrant D5,679,473487,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520501
B0251641
C0275171
D0211251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275625099.601594%
B6276185329.525175%
C6276152624.314850%
D627672511.551944%

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 7229 6274 6078 6078 84.08% 96.88%
B 7231 6276 1419 1419 19.62% 22.61%
C 7231 6276 1260 1260 17.42% 20.08%
D 7231 6276 630 630 8.71% 10.04%

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 78 8098146 187787.69 169 164 43.1
A 3 63 7099581 164631.53 169 164 43.1
A 8 249 85745 1984.58 169 164 43.1
B 6 255 4344134 34806.15 577 554 124.8
B 10 254 107324 855.57 577 554 124.8
B 5 250 67437 535.95 577 554 124.8
C 15 224 3547360 22325.51 577 573 158.9
C 1 241 778839 4898.85 577 573 158.9
C 12 2 371493 2334.78 577 573 158.9
D 8 176 1464944 8403.48 615 588 174.3
D 2 172 1289145 7394.63 615 588 174.3
D 7 30 115799 661.16 615 588 174.3

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