ASTROSAT CZTI

Data Quality Report

Orbit 57979

Creation date: 2026-06-16T08:15:51.580254
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_57979cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57979cztM0_level2_quad_clean.evt
Size (bytes)547,960,320114,814,080
Size522.6 MB 109.5 MB
Events in quadrant A4,918,170746,186
Events in quadrant B5,043,728795,531
Events in quadrant C4,807,819717,561
Events in quadrant D4,886,973656,606

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205761
B0205561
C0199681
D0203251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80753244.012384%
B80753554.396285%
C80751561.931889%
D80753424.235294%

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 8490 8076 254 254 2.99% 3.15%
B 8490 8076 152 152 1.79% 1.88%
C 8490 8077 126 126 1.48% 1.56%
D 8490 8077 285 285 3.36% 3.53%

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 10 251 1322401 6022.46 892 867 219.4
A 7 64 73104 329.2 892 867 219.4
A 8 6 23163 101.61 892 867 219.4
B 10 128 982673 5081.22 884 850 193.2
B 4 171 125677 646.02 884 850 193.2
B 5 185 89269 457.59 884 850 193.2
C 15 224 1187482 4984.84 868 861 238.0
C 12 252 146723 612.75 868 861 238.0
C 14 254 42522 175.01 868 861 238.0
D 12 110 601900 2514.73 846 811 239.0
D 13 138 530881 2217.61 846 811 239.0
D 8 240 174522 726.74 846 811 239.0

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