ASTROSAT CZTI

Data Quality Report

Orbit 54038

Creation date: 2025-09-24T17:16:05.971741
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_041T01_9000006510_54038cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54038cztM0_level2_quad_clean.evt
Size (bytes)605,543,04088,868,160
Size577.5 MB 84.8 MB
Events in quadrant A3,324,775629,586
Events in quadrant B3,516,209690,811
Events in quadrant C4,004,413597,393
Events in quadrant D11,066,508321,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148382
B0151712
C0165002
D0374665

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64761892.918468%
B64761782.748610%
C64763064.725139%
D6475304447.011583%

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 7621 6477 150 150 1.97% 2.32%
B 7621 6477 95 95 1.25% 1.47%
C 7621 6477 250 250 3.28% 3.86%
D 7620 6476 2806 2806 36.82% 43.33%

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 15 174 491320 2878.22 680 661 170.5
A 0 8 81612 474.86 680 661 170.5
A 4 3 24787 141.52 680 661 170.5
B 5 185 235058 1596.01 686 663 146.9
B 5 236 177989 1207.42 686 663 146.9
B 0 213 154803 1049.55 686 663 146.9
C 4 5 957234 5251.55 670 665 182.1
C 13 3 148059 809.19 670 665 182.1
C 1 16 79349 431.97 670 665 182.1
D 8 176 7850884 55591.53 491 468 141.2
D 2 165 504560 3569.65 491 468 141.2
D 14 20 162510 1147.48 491 468 141.2

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