ASTROSAT CZTI

Data Quality Report

Orbit 53984

Creation date: 2025-09-20T13:22:59.486761
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_041T01_9000006510_53984cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53984cztM0_level2_quad_clean.evt
Size (bytes)884,851,20097,727,040
Size843.9 MB 93.2 MB
Events in quadrant A5,192,942722,543
Events in quadrant B4,455,916816,753
Events in quadrant C4,312,760718,853
Events in quadrant D18,160,764135,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214240
B0192260
C0185541
D0594780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81354335.322680%
B81351511.856177%
C81341181.450701%
D8135666381.905347%

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 8135 8135 322 322 3.96% 3.96%
B 8135 8135 85 85 1.04% 1.04%
C 8134 8134 93 93 1.14% 1.14%
D 8135 8135 6229 6229 76.57% 76.57%

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 15 174 832124 4016.84 829 807 207.0
A 13 248 495735 2391.45 829 807 207.0
A 0 8 265139 1277.23 829 807 207.0
B 5 250 272829 1491.23 845 814 182.4
B 0 213 269553 1473.27 845 814 182.4
B 2 249 245666 1342.32 845 814 182.4
C 4 5 349313 1546.84 824 817 225.3
C 12 249 237196 1049.2 824 817 225.3
C 15 209 169847 750.26 824 817 225.3
D 8 176 11253866 112320.95 347 331 100.2
D 2 165 4544926 45359.37 347 331 100.2
D 5 113 320037 3190.97 347 331 100.2

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