ASTROSAT CZTI

Data Quality Report

Orbit 55270

Creation date: 2025-12-16T01:00:54.604424
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_009T01_9000006534_55270cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55270cztM0_level2_quad_clean.evt
Size (bytes)395,948,16097,064,640
Size377.6 MB 92.6 MB
Events in quadrant A4,165,932619,082
Events in quadrant B3,232,870678,998
Events in quadrant C3,238,387608,579
Events in quadrant D3,507,342573,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170362
B0144231
C0145501
D0151101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65822864.345184%
B6582881.336980%
C65831041.579827%
D65831141.731733%

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 7657 6583 212 212 2.77% 3.22%
B 7657 6583 14 14 0.18% 0.21%
C 7658 6584 53 53 0.69% 0.80%
D 7658 6584 70 70 0.91% 1.06%

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 0 8 764372 4534.45 687 671 168.4
A 3 14 543191 3221.2 687 671 168.4
A 12 115 79511 468.11 687 671 168.4
B 7 0 201716 1353.64 690 665 148.5
B 4 81 72053 480.64 690 665 148.5
B 5 185 62120 413.76 690 665 148.5
C 13 3 155562 825.88 683 678 187.5
C 14 254 100278 531.09 683 678 187.5
C 12 250 58366 307.61 683 678 187.5
D 11 129 205855 1073.05 683 653 191.2
D 6 42 198509 1034.63 683 653 191.2
D 7 96 131776 685.67 683 653 191.2

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