ASTROSAT CZTI

Data Quality Report

Orbit 55272

Creation date: 2025-12-16T13:39:31.594014
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_009T01_9000006534_55272cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55272cztM0_level2_quad_clean.evt
Size (bytes)386,184,96096,134,400
Size368.3 MB 91.7 MB
Events in quadrant A3,025,296626,971
Events in quadrant B2,837,669677,585
Events in quadrant C3,924,125592,790
Events in quadrant D4,007,934564,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138002
B0133042
C0162242
D0165672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6426610.949269%
B6426400.622471%
C64262363.672580%
D64261512.349829%

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 7571 6427 30 30 0.40% 0.47%
B 7571 6427 4 4 0.05% 0.06%
C 7571 6427 193 193 2.55% 3.00%
D 7571 6427 141 141 1.86% 2.19%

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 0 8 242564 1441.68 678 661 167.8
A 3 14 54721 322.18 678 661 167.8
A 7 7 28801 167.71 678 661 167.8
B 0 199 63924 434.86 679 654 145.5
B 10 247 22104 147.43 679 654 145.5
B 12 111 17156 113.42 679 654 145.5
C 15 147 617912 3325.25 667 659 185.6
C 13 3 236941 1272.89 667 659 185.6
C 14 80 139173 746.2 667 659 185.6
D 11 129 912767 4891.85 662 633 186.5
D 6 239 130796 698.07 662 633 186.5
D 7 96 97509 519.55 662 633 186.5

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