ASTROSAT CZTI

Data Quality Report

Orbit 53572

Creation date: 2025-08-23T20:07:56.647505
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_004T05_9000006502_53572cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53572cztM0_level2_quad_clean.evt
Size (bytes)775,388,16089,208,000
Size739.5 MB 85.1 MB
Events in quadrant A9,345,532436,505
Events in quadrant B3,782,927707,194
Events in quadrant C7,281,550524,397
Events in quadrant D7,797,287585,463

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322022
B0153842
C0259382
D0276902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6407256740.065553%
B64072453.823943%
C6407144222.506633%
D64073765.868581%

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 7577 6408 1736 1736 22.91% 27.09%
B 7577 6408 75 75 0.99% 1.17%
C 7577 6408 1097 1097 14.48% 17.12%
D 7577 6408 310 310 4.09% 4.84%

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 3 63 3373543 22464.36 607 591 150.1
A 3 62 1084308 7217.72 607 591 150.1
A 4 239 1077271 7170.85 607 591 150.1
B 0 213 135902 867.01 730 707 155.9
B 5 250 128950 822.43 730 707 155.9
B 2 249 100407 639.38 730 707 155.9
C 15 224 2840078 15681.11 656 648 181.1
C 15 178 1034561 5709.92 656 648 181.1
C 4 5 217277 1196.36 656 648 181.1
D 2 172 4067217 19977.2 714 683 203.6
D 12 1 148764 727.46 714 683 203.6
D 3 12 140438 686.56 714 683 203.6

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