ASTROSAT CZTI

Data Quality Report

Orbit 26939

Creation date: 2024-06-27T19:34:44.050281
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/AS1A09_134T01_9000003896_26939cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26939cztM0_level2_quad_clean.evt
Size (bytes)668,367,36070,214,400
Size637.4 MB 67.0 MB
Events in quadrant A6,458,334404,322
Events in quadrant B4,737,056443,577
Events in quadrant C3,582,542435,265
Events in quadrant D5,034,064399,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232180
B0182530
C0142260
D0189680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358137021.547656%
B63583104.875747%
C63581352.123309%
D63574196.591159%

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 7663 6358 984 984 12.84% 15.48%
B 7663 6359 116 116 1.51% 1.82%
C 7663 6359 9 9 0.12% 0.14%
D 7662 6358 340 340 4.44% 5.35%

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 14 235 3370504 21894.21 779 768 153.9
A 0 13 38204 243.23 779 768 153.9
A 8 192 34741 220.73 779 768 153.9
B 0 189 1283940 8052.75 861 839 159.3
B 10 246 37419 229.57 861 839 159.3
B 0 219 28721 174.98 861 839 159.3
C 14 238 136028 691.89 849 858 195.4
C 0 207 116739 593.15 849 858 195.4
C 15 208 21949 107.96 849 858 195.4
D 1 52 964281 4921.22 833 813 195.8
D 12 33 383518 1954.79 833 813 195.8
D 7 38 244962 1247.07 833 813 195.8

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