ASTROSAT CZTI

Data Quality Report

Orbit 57959

Creation date: 2026-06-14T23:11:56.830515
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_031T01_9000006584_57959cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57959cztM0_level2_quad_clean.evt
Size (bytes)481,642,56098,147,520
Size459.3 MB 93.6 MB
Events in quadrant A3,119,826665,314
Events in quadrant B3,244,885710,086
Events in quadrant C3,915,637620,262
Events in quadrant D7,040,931520,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137662
B0141512
C0163223
D0253732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534580.887665%
B6534961.469238%
C65331782.724629%
D653390113.791520%

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 7689 6535 4 4 0.05% 0.06%
B 7689 6535 25 25 0.33% 0.38%
C 7688 6533 134 134 1.74% 2.05%
D 7688 6534 758 758 9.86% 11.60%

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 66397 358.74 746 727 183.1
A 10 248 61608 332.58 746 727 183.1
A 3 245 38742 207.67 746 727 183.1
B 10 247 102704 642.99 731 704 158.6
B 5 185 43188 267.81 731 704 158.6
B 7 252 29738 183.02 731 704 158.6
C 15 224 1031067 5313.61 706 698 193.9
C 6 223 50325 255.93 706 698 193.9
C 12 252 24222 121.31 706 698 193.9
D 12 110 3341785 17118.58 681 651 195.2
D 2 249 474132 2425.92 681 651 195.2
D 3 12 102197 520.28 681 651 195.2

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