ASTROSAT CZTI

Data Quality Report

Orbit 58908

Creation date: 2026-08-17T19:37:36.156041
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_004T07_9000006598_58908cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58908cztM0_level2_quad_clean.evt
Size (bytes)811,630,08079,009,920
Size774.0 MB 75.3 MB
Events in quadrant A5,990,400612,029
Events in quadrant B4,579,529674,928
Events in quadrant C3,645,666621,623
Events in quadrant D15,308,37117,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222932
B0180932
C0155054
D0502382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668671910.753814%
B66874296.415433%
C66861892.826802%
D6686655097.965899%

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 7251 6688 460 460 6.34% 6.88%
B 7252 6689 226 226 3.12% 3.38%
C 7251 6688 120 120 1.65% 1.79%
D 7250 6686 5800 5800 80.00% 86.75%

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 14 238 2484636 13732.06 728 707 180.9
A 15 233 425114 2346.27 728 707 180.9
A 3 14 110208 605.36 728 707 180.9
B 4 236 536652 3456.5 722 694 155.1
B 4 171 265924 1710.52 722 694 155.1
B 5 185 143293 919.65 722 694 155.1
C 12 252 392694 1966.24 723 714 199.4
C 3 233 116799 582.3 723 714 199.4
C 6 13 105580 526.02 723 714 199.4
D 12 110 12958807 145915.31 306 292 88.8
D 7 222 683848 7696.97 306 292 88.8
D 11 129 275152 3094.98 306 292 88.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct