ASTROSAT CZTI

Data Quality Report

Orbit 52296

Creation date: 2025-07-22T13:20:18.384683
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_011T05_9000006474_52296cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52296cztM0_level2_quad_clean.evt
Size (bytes)897,563,52086,290,560
Size856.0 MB 82.3 MB
Events in quadrant A3,985,352690,379
Events in quadrant B6,411,340661,854
Events in quadrant C13,887,507224,510
Events in quadrant D8,405,475553,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167131
B0238561
C0460051
D0297761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69182103.035559%
B691990013.007660%
C6919473468.420292%
D6919120017.343547%

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 7743 6919 61 61 0.79% 0.88%
B 7743 6921 657 657 8.49% 9.49%
C 7744 6919 4253 4253 54.92% 61.47%
D 7744 6919 1019 1019 13.16% 14.73%

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 3 213630 1056.19 763 745 201.6
A 3 62 125720 620.04 763 745 201.6
A 7 206 102175 503.23 763 745 201.6
B 12 32 835490 5668.38 690 670 147.3
B 0 216 594907 4034.83 690 670 147.3
B 4 171 533718 3619.36 690 670 147.3
C 15 178 2354963 17695.81 459 453 133.1
C 15 224 1996619 15002.6 459 453 133.1
C 5 250 1821634 13687.47 459 453 133.1
D 15 93 4014090 18912.96 705 672 212.2
D 8 176 659179 3103.17 705 672 212.2
D 12 17 250993 1179.62 705 672 212.2

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