ASTROSAT CZTI

Data Quality Report

Orbit 57583

Creation date: 2026-05-20T16:17:35.550697
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_070T08_9000006576_57583cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57583cztM0_level2_quad_clean.evt
Size (bytes)420,733,44092,859,840
Size401.2 MB 88.6 MB
Events in quadrant A2,687,764626,140
Events in quadrant B3,467,805664,437
Events in quadrant C4,493,574567,586
Events in quadrant D4,442,598520,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126071
B0144801
C0176531
D0174661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6199560.903372%
B61991883.032747%
C61994166.710760%
D61995298.533634%

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 7315 6200 2 2 0.03% 0.03%
B 7315 6200 76 76 1.04% 1.23%
C 7315 6200 235 235 3.21% 3.79%
D 7315 6200 385 385 5.26% 6.21%

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 4 13 12693 71.37 687 670 168.4
A 3 137 7960 43.28 687 670 168.4
A 3 14 7747 42.01 687 670 168.4
B 2 249 545437 3867.23 669 645 140.9
B 4 201 54770 384.21 669 645 140.9
B 0 245 32704 227.57 669 645 140.9
C 12 254 824692 4639.58 650 644 177.6
C 15 224 708287 3984.19 650 644 177.6
C 14 254 286001 1606.63 650 644 177.6
D 15 142 989109 5426.68 643 615 182.2
D 8 160 462112 2533.55 643 615 182.2
D 2 31 118110 645.03 643 615 182.2

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