ASTROSAT CZTI

Data Quality Report

Orbit 57595

Creation date: 2026-05-21T11:06:00.977335
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_070T08_9000006576_57595cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57595cztM0_level2_quad_clean.evt
Size (bytes)562,043,52096,148,800
Size536.0 MB 91.7 MB
Events in quadrant A3,071,155670,325
Events in quadrant B3,144,644723,078
Events in quadrant C6,387,264585,767
Events in quadrant D7,687,793471,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136812
B0139752
C0235922
D0274282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621390.589035%
B6621540.815587%
C662179512.007250%
D6621156023.561396%

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 7751 6622 2 2 0.03% 0.03%
B 7751 6622 12 12 0.15% 0.18%
C 7751 6622 623 623 8.04% 9.41%
D 7751 6622 1524 1524 19.66% 23.01%

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 158803 876.81 730 713 180.3
A 3 128 38989 212.29 730 713 180.3
A 3 49 36665 199.4 730 713 180.3
B 0 63 92258 595.9 724 696 153.7
B 10 247 50654 325.13 724 696 153.7
B 4 201 26160 165.72 724 696 153.7
C 15 224 3028026 16353.59 684 677 185.1
C 12 2 456536 2462.53 684 677 185.1
C 14 245 98679 529.4 684 677 185.1
D 15 142 4615123 26365.14 622 592 175.0
D 2 249 172150 980.2 622 592 175.0
D 8 240 136503 776.53 622 592 175.0

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