ASTROSAT CZTI

Data Quality Report

Orbit 53559

Creation date: 2025-08-22T21:29:18.678695
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_53559cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53559cztM0_level2_quad_clean.evt
Size (bytes)903,706,56067,380,480
Size861.8 MB 64.3 MB
Events in quadrant A8,539,233411,451
Events in quadrant B3,670,612624,158
Events in quadrant C10,584,441301,987
Events in quadrant D10,195,494284,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294991
B0149671
C0354551
D0344321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5986215836.050785%
B59872303.841657%
C5986301350.334113%
D5986301850.417641%

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 7041 5987 1877 1877 26.66% 31.35%
B 7042 5988 79 79 1.12% 1.32%
C 7041 5987 2989 2989 42.45% 49.92%
D 7041 5987 2533 2533 35.98% 42.31%

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 63 2480704 18206.36 547 534 136.2
A 15 174 1408717 10337.15 547 534 136.2
A 12 115 927149 6802.07 547 534 136.2
B 10 254 235989 1707.74 645 625 137.8
B 5 185 228678 1654.7 645 625 137.8
B 0 213 151819 1097.03 645 625 137.8
C 1 241 6382340 51551.74 445 442 123.8
C 15 224 1018106 8220.49 445 442 123.8
C 12 254 699658 5648.13 445 442 123.8
D 8 176 6138311 52095.96 406 387 117.8
D 2 62 511602 4338.97 406 387 117.8
D 4 7 480995 4079.19 406 387 117.8

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