ASTROSAT CZTI

Data Quality Report

Orbit 58442

Creation date: 2026-07-17T11:24:51.118149
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_045T01_9000006590_58442cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58442cztM0_level2_quad_clean.evt
Size (bytes)429,505,92099,982,080
Size409.6 MB 95.4 MB
Events in quadrant A3,451,574652,352
Events in quadrant B3,684,146697,838
Events in quadrant C4,292,462616,580
Events in quadrant D3,941,948587,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151202
B0156182
C0175952
D0165362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67971782.618802%
B67972874.222451%
C67973545.208180%
D67971822.677652%

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 7707 6797 46 46 0.60% 0.68%
B 7707 6798 57 57 0.74% 0.84%
C 7707 6797 245 245 3.18% 3.60%
D 7707 6798 100 100 1.30% 1.47%

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 12 80 284760 1470.89 784 764 193.1
A 7 64 27979 140.95 784 764 193.1
A 3 245 24287 121.83 784 764 193.1
B 5 172 433366 2600.81 773 745 166.3
B 2 249 39297 231.76 773 745 166.3
B 0 186 22833 132.79 773 745 166.3
C 5 10 411596 2002.71 746 741 205.1
C 1 12 394989 1921.76 746 741 205.1
C 6 223 136019 659.41 746 741 205.1
D 8 240 292150 1363.87 751 716 213.7
D 2 249 138784 646.14 751 716 213.7
D 9 49 136306 634.54 751 716 213.7

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