ASTROSAT CZTI

Data Quality Report

Orbit 20160108_G02_012T01_9000000256_level2

Creation date: 2025-10-25T19:06:32.302349
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/AS1G02_012T01_9000000256cztM0_level2.fits modeM0/AS1G02_012T01_9000000256cztM0_level2_quad_clean.evt
Size (bytes)90,017,28077,863,680
Size85.8 MB 74.3 MB
Events in quadrant A532,334436,687
Events in quadrant B527,128437,853
Events in quadrant C520,978411,006
Events in quadrant D453,212379,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426100
B0436810
C0417460
D0438830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99911631.631468%
B99911441.441297%
C99911241.241117%
D99912682.682414%

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 12361 9989 0 0 0.00% 0.00%
B 12361 9990 0 0 0.00% 0.00%
C 12361 9990 0 0 0.00% 0.00%
D 12361 9989 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 29 460 9.67 137 129 34.2
A 7 110 441 9.12 137 129 34.2
A 14 30 415 8.36 137 129 34.2
B 2 9 412 10.05 139 133 27.8
B 5 128 330 7.1 139 133 27.8
B 14 254 328 7.03 139 133 27.8
C 1 225 333 5.76 137 127 35.8
C 3 235 331 5.7 137 127 35.8
C 9 242 330 5.68 137 127 35.8
D 6 231 339 7.02 128 118 31.5
D 15 30 338 6.99 128 118 31.5
D 11 82 331 6.77 128 118 31.5

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