ASTROSAT CZTI

Data Quality Report

Orbit 54607

Creation date: 2025-11-01T12:14:54.880899
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_066T07_9000006522_54607cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54607cztM0_level2_quad_clean.evt
Size (bytes)829,704,960112,599,360
Size791.3 MB 107.4 MB
Events in quadrant A11,530,801640,485
Events in quadrant B4,021,388854,572
Events in quadrant C9,671,912633,234
Events in quadrant D4,843,199701,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400491
B0182271
C0346791
D0205261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8343221126.501259%
B83431081.294498%
C8344156518.755992%
D83442052.456855%

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 9033 8344 1860 1860 20.59% 22.29%
B 9033 8344 27 27 0.30% 0.32%
C 9034 8345 1321 1321 14.62% 15.83%
D 9034 8345 155 155 1.72% 1.86%

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 14 7634838 36806.35 841 821 207.4
A 11 3 165906 795.93 841 821 207.4
A 8 62 136581 654.55 841 821 207.4
B 10 247 115982 573.88 923 888 200.6
B 5 172 99087 489.64 923 888 200.6
B 1 207 67509 332.18 923 888 200.6
C 6 223 3703838 15957.52 843 837 232.1
C 4 5 2144677 9238.55 843 837 232.1
C 13 3 159010 681.62 843 837 232.1
D 12 33 417995 1645.78 891 854 253.5
D 8 240 395761 1558.06 891 854 253.5
D 2 207 84346 329.41 891 854 253.5

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