ASTROSAT CZTI

Data Quality Report

Orbit 20160201_T01_052T01_9000000308_level2

Creation date: 2025-10-27T12:08:38.920210
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/AS1T01_052T01_9000000308cztM0_level2.fits modeM0/AS1T01_052T01_9000000308cztM0_level2_quad_clean.evt
Size (bytes)710,657,280760,587,840
Size677.7 MB 725.4 MB
Events in quadrant A4,100,2904,479,410
Events in quadrant B4,152,2804,585,519
Events in quadrant C4,097,9784,364,265
Events in quadrant D3,533,9003,969,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04109100
B03690930
C03488270
D03403120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016470
B016460
C016480
D016400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140072051415080140071768424494
B1140072051415080140071768424494
C1140072051415080140071768424494
D1140072051415080140071768424494

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8219314371.748324%
B822367860.955786%
C822317370.896256%
D822539271.127011%

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 112510 82334 0 0 0.00% 0.00%
B 112510 82367 0 0 0.00% 0.00%
C 112510 82330 0 0 0.00% 0.00%
D 112510 82366 0 0 0.00% 0.00%

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 29 3871 11.46 1063 988 251.6
A 7 110 3637 10.53 1063 988 251.6
A 14 79 3000 8.0 1063 988 251.6
B 2 9 3271 11.15 1095 1039 200.2
B 5 128 2794 8.76 1095 1039 200.2
B 14 254 2628 7.94 1095 1039 200.2
C 12 241 2771 6.78 1080 998 261.4
C 9 242 2767 6.77 1080 998 261.4
C 1 81 2644 6.3 1080 998 261.4
D 1 19 2599 7.12 1009 924 235.3
D 6 44 2544 6.89 1009 924 235.3
D 3 30 2530 6.83 1009 924 235.3

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