ASTROSAT CZTI

Data Quality Report

Orbit 58675

Creation date: 2026-08-02T13:47:01.442931
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_004T06_9000006594_58675cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58675cztM0_level2_quad_clean.evt
Size (bytes)413,029,44084,185,280
Size393.9 MB 80.3 MB
Events in quadrant A2,840,452569,129
Events in quadrant B6,194,046495,374
Events in quadrant C2,978,234551,338
Events in quadrant D2,815,800520,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013664827
B0241771698
C013817723
D013594897

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01246
B01244
C01244
D01246

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5924621.046590%
B5854127621.797062%
C5938741.246211%
D5913110.186031%

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 7569 6048 36 36 0.48% 0.60%
B 7572 5995 839 839 11.08% 13.99%
C 7572 6051 55 55 0.73% 0.91%
D 7572 6022 12 12 0.16% 0.20%

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 10 251 170680 1080.44 641 625 157.4
A 0 24 58832 369.82 641 625 157.4
A 3 14 39381 246.23 641 625 157.4
B 5 172 3541701 28572.42 575 554 123.9
B 15 32 86159 690.72 575 554 123.9
B 0 186 66533 532.36 575 554 123.9
C 12 249 224224 1281.42 631 624 174.5
C 9 38 99733 567.98 631 624 174.5
C 14 254 92379 525.84 631 624 174.5
D 1 27 144403 786.98 629 599 182.7
D 7 222 37824 203.72 629 599 182.7
D 5 173 34327 184.58 629 599 182.7

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