ASTROSAT CZTI

Data Quality Report

Orbit 52440

Creation date: 2025-06-27T20:41:59.801549
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/AS1A13_037T01_9000006476_52440cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52440cztM0_level2_quad_clean.evt
Size (bytes)1,670,140,800198,567,360
Size1.6 GB 189.4 MB
Events in quadrant A6,899,8951,466,811
Events in quadrant B9,658,7811,586,632
Events in quadrant C17,262,9421,131,350
Events in quadrant D26,802,929755,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323813
B0396543
C06237210
D0903064

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15529730.470088%
B155303672.363168%
C15529326621.031618%
D15529694944.748535%

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 19074 15532 36 36 0.19% 0.23%
B 19075 15533 200 200 1.05% 1.29%
C 19075 15532 2799 2799 14.67% 18.02%
D 19074 15531 6762 6762 35.45% 43.54%

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 5 240 116282 286.74 1635 1601 399.9
A 8 25 65690 160.25 1635 1601 399.9
A 12 17 62840 153.12 1635 1601 399.9
B 7 0 1162079 3372.27 1615 1559 344.1
B 10 254 792386 2298.01 1615 1559 344.1
B 4 81 233395 673.68 1615 1559 344.1
C 15 224 4182650 10796.4 1399 1390 387.3
C 4 5 2139693 5521.3 1399 1390 387.3
C 15 164 1840750 4749.4 1399 1390 387.3
D 12 17 8316202 23939.22 1217 1162 347.3
D 15 93 7300776 21015.78 1217 1162 347.3
D 12 2 2619713 7538.88 1217 1162 347.3

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