ASTROSAT CZTI

Data Quality Report

Orbit 54420

Creation date: 2025-10-19T22:12:34.656308
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_126T19_9000006518_54420cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54420cztM0_level2_quad_clean.evt
Size (bytes)651,490,56097,882,560
Size621.3 MB 93.3 MB
Events in quadrant A3,687,307696,179
Events in quadrant B3,542,434742,753
Events in quadrant C4,080,910652,737
Events in quadrant D12,219,912347,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161280
B0161680
C0177240
D0415210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7533220.292048%
B7534540.716751%
C75341321.752057%
D7534356147.265729%

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 7533 7533 17 17 0.23% 0.23%
B 7533 7533 37 37 0.49% 0.49%
C 7534 7534 126 126 1.67% 1.67%
D 7533 7533 3137 3137 41.64% 41.64%

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 7 206 199547 1023.14 790 771 194.3
A 11 3 91296 465.95 790 771 194.3
A 7 237 78721 401.23 790 771 194.3
B 5 185 190183 1124.05 780 751 168.5
B 0 213 92505 544.45 780 751 168.5
B 10 247 71411 419.28 780 751 168.5
C 13 3 567599 2707.46 760 752 209.4
C 14 254 312454 1488.8 760 752 209.4
C 12 249 81044 383.5 760 752 209.4
D 8 176 5070568 34665.12 511 489 146.3
D 15 108 3230030 22081.0 511 489 146.3
D 7 70 1217801 8323.0 511 489 146.3

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