ASTROSAT CZTI

Data Quality Report

Orbit 52006

Creation date: 2025-05-13T11:13:56.518998
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/AS1C09_011T06_9000006468_52006cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52006cztM0_level2_quad_clean.evt
Size (bytes)992,923,20088,225,920
Size946.9 MB 84.1 MB
Events in quadrant A10,406,542461,140
Events in quadrant B8,369,521611,519
Events in quadrant C9,352,766523,799
Events in quadrant D8,061,232564,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359771
B0300601
C0328671
D0290601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7322262435.837203%
B7323157021.439301%
C7323188925.795439%
D732393612.781647%

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 7927 7322 2232 2232 28.16% 30.48%
B 7928 7323 859 859 10.84% 11.73%
C 7928 7324 1861 1861 23.47% 25.41%
D 7928 7324 870 870 10.97% 11.88%

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 7 64 4110334 26240.22 620 604 156.6
A 2 48 2507393 16005.6 620 604 156.6
A 8 246 323371 2060.84 620 604 156.6
B 7 0 4252602 28473.05 708 683 149.3
B 4 171 327679 2189.73 708 683 149.3
B 4 206 312001 2084.74 708 683 149.3
C 15 224 3767128 20580.18 659 653 183.0
C 13 3 890052 4859.71 659 653 183.0
C 7 190 682894 3727.79 659 653 183.0
D 6 42 1024588 5161.75 693 662 198.4
D 2 172 835184 4206.94 693 662 198.4
D 8 176 634731 3196.43 693 662 198.4

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