ASTROSAT CZTI

Data Quality Report

Orbit 20170625_G07_030T01_9000001338_level2

Creation date: 2025-11-14T20:46:06.689091
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/AS1G07_030T01_9000001338cztM0_level2.fits modeM0/AS1G07_030T01_9000001338cztM0_level2_quad_clean.evt
Size (bytes)257,777,280201,349,440
Size245.8 MB 192.0 MB
Events in quadrant A1,635,7861,178,593
Events in quadrant B1,606,6901,199,974
Events in quadrant C1,274,304813,424
Events in quadrant D1,433,2681,052,705

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05460
D05480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0677570
B0566020
C01142610
D0574490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0630
C0640
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267945422.022841%
B270393951.460853%
C26875818030.437209%
D269853461.282194%

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 34771 27818 0 0 0.00% 0.00%
B 34771 27934 0 0 0.00% 0.00%
C 34771 26707 0 0 0.00% 0.00%
D 34771 27881 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 1474 10.06 426 399 106.9
A 7 110 1236 7.83 426 399 106.9
A 9 19 1232 7.79 426 399 106.9
B 2 9 1376 11.12 424 403 87.5
B 3 80 1106 8.03 424 403 87.5
B 14 254 1072 7.64 424 403 87.5
C 12 241 902 6.59 336 313 89.4
C 1 81 892 6.48 336 313 89.4
C 1 80 880 6.35 336 313 89.4
D 6 231 1062 6.29 408 374 109.4
D 3 14 1037 6.06 408 374 109.4
D 6 67 1004 5.76 408 374 109.4

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