ASTROSAT CZTI

Data Quality Report

Orbit 54026

Creation date: 2025-09-23T10:30:47.314495
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_041T01_9000006510_54026cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54026cztM0_level2_quad_clean.evt
Size (bytes)737,150,400101,024,640
Size703.0 MB 96.3 MB
Events in quadrant A3,919,433714,096
Events in quadrant B4,070,548782,149
Events in quadrant C4,427,097696,143
Events in quadrant D14,264,317324,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177102
B0178672
C0190872
D0477302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77962453.142637%
B77972873.680903%
C77972232.860074%
D7797418353.648839%

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 7821 7797 105 105 1.34% 1.35%
B 7822 7798 92 92 1.18% 1.18%
C 7822 7798 138 138 1.76% 1.77%
D 7822 7798 3544 3544 45.31% 45.45%

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 575929 2878.58 808 787 199.8
A 0 8 72899 360.92 808 787 199.8
A 2 143 32887 160.66 808 787 199.8
B 0 213 342443 1988.91 817 791 171.8
B 5 236 154252 893.37 817 791 171.8
B 7 252 92188 532.06 817 791 171.8
C 14 254 245496 1121.11 805 797 218.3
C 1 241 200735 916.04 805 797 218.3
C 13 3 170343 776.79 805 797 218.3
D 8 176 10491534 64996.02 571 547 161.4
D 3 12 1048076 6489.88 571 547 161.4
D 7 70 103027 634.91 571 547 161.4

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