ASTROSAT CZTI

Data Quality Report

Orbit 58074

Creation date: 2026-06-22T16:21:09.554057
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_031T01_9000006584_58074cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58074cztM0_level2_quad_clean.evt
Size (bytes)669,188,16082,313,280
Size638.2 MB 78.5 MB
Events in quadrant A4,003,151585,515
Events in quadrant B4,403,470639,233
Events in quadrant C3,674,237561,299
Events in quadrant D12,216,649279,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159881
B0171661
C0152891
D0404763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61093245.303650%
B61091963.208381%
C61102383.895254%
D6109329653.953184%

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 7144 6110 194 194 2.72% 3.18%
B 7144 6110 90 90 1.26% 1.47%
C 7145 6110 182 182 2.55% 2.98%
D 7144 6109 3130 3130 43.81% 51.24%

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 1194308 7134.34 679 660 167.3
A 13 248 56839 335.78 679 660 167.3
A 3 14 47705 281.18 679 660 167.3
B 10 128 1532291 10607.29 671 646 144.4
B 4 171 34181 232.24 671 646 144.4
B 6 51 29171 197.55 671 646 144.4
C 12 252 654589 3646.33 656 650 179.3
C 12 254 291565 1622.13 656 650 179.3
C 12 249 56013 308.7 656 650 179.3
D 12 110 6828129 45468.95 528 505 150.2
D 8 160 1480204 9854.14 528 505 150.2
D 12 1 849393 5653.22 528 505 150.2

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