ASTROSAT CZTI

Data Quality Report

Orbit 21931

Creation date: 2024-06-27T18:34:07.402451
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_100T03_9000003242_21931cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21931cztM0_level2_quad_clean.evt
Size (bytes)617,232,960133,381,440
Size588.6 MB 127.2 MB
Events in quadrant A7,397,135850,841
Events in quadrant B3,353,843937,033
Events in quadrant C3,255,577920,644
Events in quadrant D4,240,896871,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265371
B0141661
C0138171
D0171571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6587112817.124639%
B6586981.488005%
C65861111.685393%
D65863305.010629%

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 7642 6587 721 721 9.43% 10.95%
B 7641 6586 11 11 0.14% 0.17%
C 7641 6586 0 0 0.00% 0.00%
D 7641 6586 222 222 2.91% 3.37%

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 15 236 4309227 28181.67 770 756 152.9
A 5 16 67799 438.53 770 756 152.9
A 4 2 28584 182.02 770 756 152.9
B 3 64 70966 462.74 818 797 151.6
B 0 230 22785 145.0 818 797 151.6
B 0 197 19924 126.13 818 797 151.6
C 14 238 126086 685.22 800 805 182.8
C 4 175 6370 30.44 800 805 182.8
C 13 61 5337 24.79 800 805 182.8
D 1 52 583069 3089.15 790 768 188.5
D 12 235 342873 1814.89 790 768 188.5
D 11 176 134509 709.51 790 768 188.5

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