ASTROSAT CZTI

Data Quality Report

Orbit 53553

Creation date: 2025-08-22T13:26:02.184300
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_53553cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53553cztM0_level2_quad_clean.evt
Size (bytes)753,629,76088,940,160
Size718.7 MB 84.8 MB
Events in quadrant A9,447,142500,886
Events in quadrant B3,994,721685,594
Events in quadrant C6,513,701576,843
Events in quadrant D7,420,933459,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327191
B0164281
C0240001
D0268831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6728188027.942925%
B67282173.225327%
C672874211.028537%
D6728156123.201546%

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 7673 6728 1723 1723 22.46% 25.61%
B 7673 6728 117 117 1.52% 1.74%
C 7673 6728 686 686 8.94% 10.20%
D 7673 6728 1514 1514 19.73% 22.50%

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 12 115 3487582 20967.33 663 645 166.3
A 3 63 2260744 13590.22 663 645 166.3
A 15 174 746238 4483.33 663 645 166.3
B 2 249 548071 3525.85 725 700 155.2
B 5 185 109340 699.8 725 700 155.2
B 15 20 83351 532.39 725 700 155.2
C 15 224 1877601 9924.39 685 680 189.1
C 12 2 1086300 5740.32 685 680 189.1
C 4 5 233965 1233.52 685 680 189.1
D 15 94 3423743 19451.27 609 580 176.0
D 3 12 325012 1843.5 609 580 176.0
D 12 34 317241 1799.35 609 580 176.0

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