ASTROSAT CZTI

Data Quality Report

Orbit 57883

Creation date: 2026-06-09T21:13:38.391943
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_125T11_9000006582_57883cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57883cztM0_level2_quad_clean.evt
Size (bytes)387,699,84094,351,680
Size369.7 MB 90.0 MB
Events in quadrant A2,837,619623,950
Events in quadrant B3,451,092645,258
Events in quadrant C3,899,256581,800
Events in quadrant D3,662,652557,150

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132381
B0148081
C0162521
D0151031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434240.373018%
B64351902.952603%
C64351662.579643%
D64351111.724942%

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 7364 6435 13 13 0.18% 0.20%
B 7365 6436 101 101 1.37% 1.57%
C 7365 6435 160 160 2.17% 2.49%
D 7365 6436 70 70 0.95% 1.09%

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 7 64 84263 492.04 690 674 169.9
A 3 245 74209 432.86 690 674 169.9
A 3 137 8328 45.05 690 674 169.9
B 2 249 412390 2836.81 670 645 145.1
B 5 185 83562 571.28 670 645 145.1
B 0 63 72536 495.31 670 645 145.1
C 15 224 914158 5086.4 656 647 179.6
C 2 12 220295 1222.99 656 647 179.6
C 14 254 87488 483.53 656 647 179.6
D 8 240 444600 2381.15 661 632 186.5
D 12 110 181490 970.0 661 632 186.5
D 2 31 83412 443.98 661 632 186.5

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