ASTROSAT CZTI

Data Quality Report

Orbit 20210313_A10_094T06_9000004248_level2

Creation date: 2025-12-22T18:57:43.711036
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/AS1A10_094T06_9000004248cztM0_level2.fits modeM0/AS1A10_094T06_9000004248cztM0_level2_quad_clean.evt
Size (bytes)161,507,52081,803,520
Size154.0 MB 78.0 MB
Events in quadrant A1,068,204448,193
Events in quadrant B1,018,960445,508
Events in quadrant C1,053,560434,225
Events in quadrant D728,450128,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312570
B0342220
C0352380
D0964450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147551260.853948%
B147552641.789224%
C147554162.819383%
D14755738650.057608%

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 18790 14755 0 0 0.00% 0.00%
B 18790 14755 0 0 0.00% 0.00%
C 18790 14754 0 0 0.00% 0.00%
D 18790 14724 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 29 882 9.16 278 266 67.3
A 7 110 853 8.73 278 266 67.3
A 0 30 794 7.85 278 266 67.3
B 2 9 810 10.28 270 262 53.3
B 3 80 713 8.46 270 262 53.3
B 5 128 697 8.16 270 262 53.3
C 1 81 834 7.99 279 266 71.1
C 1 80 823 7.84 279 266 71.1
C 3 187 729 6.51 279 266 71.1
D 15 46 575 6.84 208 192 56.0
D 6 38 520 5.86 208 192 56.0
D 10 189 512 5.71 208 192 56.0

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