ASTROSAT CZTI

Data Quality Report

Orbit 58212

Creation date: 2026-07-02T00:11:13.916147
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_042T02_9000006586_58212cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58212cztM0_level2_quad_clean.evt
Size (bytes)573,958,080108,000,000
Size547.4 MB 103.0 MB
Events in quadrant A3,728,569733,438
Events in quadrant B6,810,938697,333
Events in quadrant C3,306,050694,925
Events in quadrant D6,809,487614,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01564
B01553
C01564
D01566

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017023420
B025977634
C016156422
D0268191323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7635450.589391%
B760997412.800631%
C7632150.196541%
D75905427.140975%

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 7689 7663 28 28 0.36% 0.37%
B 7670 7650 725 725 9.45% 9.48%
C 7713 7666 6 6 0.08% 0.08%
D 7700 7621 598 598 7.77% 7.85%

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 192440 923.97 834 813 207.4
A 7 64 110019 526.56 834 813 207.4
A 13 248 76558 365.22 834 813 207.4
B 2 249 2054844 12291.6 778 749 167.1
B 10 128 1079585 6455.7 778 749 167.1
B 0 153 100453 596.62 778 749 167.1
C 12 252 93430 416.3 805 796 222.5
C 14 254 24941 108.51 805 796 222.5
C 1 27 23663 102.77 805 796 222.5
D 12 110 1368020 6252.29 779 748 218.7
D 2 31 1025762 4687.21 779 748 218.7
D 8 240 366067 1670.54 779 748 218.7

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