ASTROSAT CZTI

Data Quality Report

Orbit 21890

Creation date: 2024-06-27T18:33:32.519974
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/AS1A07_041T01_9000003234_21890cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21890cztM0_level2_quad_clean.evt
Size (bytes)493,954,56087,909,120
Size471.1 MB 83.8 MB
Events in quadrant A3,400,676541,438
Events in quadrant B3,556,819554,459
Events in quadrant C3,387,651534,088
Events in quadrant D4,112,004517,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152141
B0154281
C0150921
D0172411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7386360.487409%
B7386610.825887%
C7386821.110209%
D73861131.529921%

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 7656 7387 4 4 0.05% 0.05%
B 7656 7387 6 6 0.08% 0.08%
C 7656 7386 0 0 0.00% 0.00%
D 7656 7387 69 69 0.90% 0.93%

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 4 2 60550 340.73 861 844 175.2
A 5 16 14960 80.56 861 844 175.2
A 13 254 13266 70.89 861 844 175.2
B 4 171 35772 209.83 868 845 166.5
B 0 230 29780 173.83 868 845 166.5
B 0 197 29235 170.55 868 845 166.5
C 14 238 130839 663.86 830 833 195.8
C 10 22 8408 38.68 830 833 195.8
C 8 128 8103 37.12 830 833 195.8
D 1 52 627086 3065.2 832 808 204.3
D 2 136 115850 563.05 832 808 204.3
D 13 174 87054 422.12 832 808 204.3

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