ASTROSAT CZTI

Data Quality Report

Orbit 56435

Creation date: 2026-03-04T10:22:07.296859
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_083T05_9000006554_56435cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56435cztM0_level2_quad_clean.evt
Size (bytes)582,022,08080,746,560
Size555.1 MB 77.0 MB
Events in quadrant A7,465,415438,546
Events in quadrant B5,772,688521,291
Events in quadrant C4,019,656526,122
Events in quadrant D3,770,943495,387

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267342
B0217383
C0164832
D0159652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6642154823.306233%
B6641105115.825930%
C66422603.914484%
D66421422.137910%

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 8034 6889 1473 1473 18.33% 21.38%
B 8033 6896 625 625 7.78% 9.06%
C 8034 6925 177 177 2.20% 2.56%
D 8034 6925 120 120 1.49% 1.73%

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 3 3172528 19409.42 660 644 163.4
A 4 95 698015 4267.36 660 644 163.4
A 12 194 433756 2650.3 660 644 163.4
B 4 206 2625952 18110.2 679 653 145.0
B 0 231 231554 1592.83 679 653 145.0
B 15 33 59558 406.35 679 653 145.0
C 6 223 325595 1663.69 709 701 195.3
C 12 254 257400 1314.48 709 701 195.3
C 12 252 250276 1278.0 709 701 195.3
D 8 160 287894 1456.58 701 669 197.2
D 2 31 169859 858.0 701 669 197.2
D 2 249 161019 813.17 701 669 197.2

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