ASTROSAT CZTI

Data Quality Report

Orbit 53372

Creation date: 2025-08-10T07:20:07.282325
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/AS1C09_011T09_9000006494_53372cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53372cztM0_level2_quad_clean.evt
Size (bytes)801,463,68095,230,080
Size764.3 MB 90.8 MB
Events in quadrant A3,678,786709,265
Events in quadrant B5,606,134719,962
Events in quadrant C15,247,552294,484
Events in quadrant D4,558,099641,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165896
B0220495
C0504592
D0188975

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74391041.398037%
B74406158.266129%
C7441469863.136675%
D74391371.841645%

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 7811 7441 64 64 0.82% 0.86%
B 7811 7442 321 321 4.11% 4.31%
C 7811 7442 4205 4205 53.83% 56.50%
D 7811 7441 98 98 1.25% 1.32%

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 296044 1541.27 777 758 191.6
A 3 62 55753 287.05 777 758 191.6
A 14 254 49786 255.91 777 758 191.6
B 2 249 669404 4174.88 758 733 160.2
B 4 171 412517 2570.99 758 733 160.2
B 4 206 394211 2456.7 758 733 160.2
C 15 178 8991430 60126.59 542 536 149.5
C 15 224 1629374 10892.85 542 536 149.5
C 1 241 1318103 8811.23 542 536 149.5
D 11 245 277052 1271.01 759 725 217.4
D 12 35 251389 1152.97 759 725 217.4
D 2 249 236974 1086.66 759 725 217.4

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