ASTROSAT CZTI

Data Quality Report

Orbit 53610

Creation date: 2025-08-26T09:17:22.381276
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_53610cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53610cztM0_level2_quad_clean.evt
Size (bytes)1,508,253,120121,809,600
Size1.4 GB 116.2 MB
Events in quadrant A9,000,898947,782
Events in quadrant B6,295,7231,092,115
Events in quadrant C25,199,820221,295
Events in quadrant D14,483,057663,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343272
B0262883
C0822312
D0508082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110269338.461818%
B110261331.206240%
C11026895681.226193%
D11026333930.282968%

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 12400 11022 795 795 6.41% 7.21%
B 12400 11022 65 65 0.52% 0.59%
C 12399 11019 8249 8249 66.53% 74.86%
D 12400 11019 3027 3027 24.41% 27.47%

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 78 2397430 8415.4 1150 1121 284.8
A 15 174 821136 2879.74 1150 1121 284.8
A 3 63 333796 1168.29 1150 1121 284.8
B 10 28 641226 2564.04 1167 1124 249.6
B 0 213 265602 1059.41 1167 1124 249.6
B 10 247 220682 879.48 1167 1124 249.6
C 1 241 12105288 78983.75 550 546 153.3
C 15 224 6161231 40198.62 550 546 153.3
C 12 254 2706424 17655.92 550 546 153.3
D 8 176 7697205 28671.53 936 896 268.4
D 3 12 1170483 4357.13 936 896 268.4
D 12 34 607695 2260.55 936 896 268.4

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