ASTROSAT CZTI

Data Quality Report

Orbit 26302

Creation date: 2024-06-27T19:27:12.385723
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_143T03_9000003794_26302cztM0_level2.evt modeM0/AS1A09_143T03_9000003794_26302cztM0_level2_quad_clean.evt
Size (bytes)441,282,24099,342,720
Size420.8 MB 94.7 MB
Events in quadrant A3,348,220641,759
Events in quadrant B3,185,815669,044
Events in quadrant C3,347,842638,629
Events in quadrant D3,060,451625,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137410
B0132030
C0136220
D0130420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210330.531401%
B6210320.515298%
C6210781.256039%
D6210150.241546%

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 7505 6211 13 13 0.17% 0.21%
B 7505 6211 0 0 0.00% 0.00%
C 7505 6211 11 11 0.15% 0.18%
D 7505 6211 10 10 0.13% 0.16%

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 13 250206 1552.47 803 788 160.7
A 13 254 9622 54.99 803 788 160.7
A 3 137 7134 39.5 803 788 160.7
B 12 111 18038 111.52 812 792 154.6
B 11 111 16233 99.85 812 792 154.6
B 14 111 14828 90.76 812 792 154.6
C 14 238 125310 678.91 788 796 183.4
C 3 233 110678 599.13 788 796 183.4
C 2 16 40762 217.91 788 796 183.4
D 11 176 29173 152.16 790 773 186.6
D 2 234 23291 120.65 790 773 186.6
D 2 153 21865 113.01 790 773 186.6

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