ASTROSAT CZTI

Data Quality Report

Orbit 26391

Creation date: 2024-06-27T19:28:29.158332
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_044T02_9000003814_26391cztM0_level2.evt modeM0/AS1A09_044T02_9000003814_26391cztM0_level2_quad_clean.evt
Size (bytes)887,581,440130,080,960
Size846.5 MB 124.1 MB
Events in quadrant A5,760,452811,267
Events in quadrant B5,773,172829,067
Events in quadrant C6,499,495765,251
Events in quadrant D8,079,181747,362

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242730
B0241320
C0262970
D0317610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113601141.003521%
B113601030.906690%
C113603302.904930%
D113603673.230634%

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 12810 11362 45 45 0.35% 0.40%
B 12810 11362 0 0 0.00% 0.00%
C 12810 11362 144 144 1.12% 1.27%
D 12810 11362 277 277 2.16% 2.44%

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 310222 1080.83 1414 1388 285.7
A 13 254 19015 61.69 1414 1388 285.7
A 3 137 13281 41.62 1414 1388 285.7
B 0 244 160637 585.04 1415 1378 272.2
B 0 230 70312 253.23 1415 1378 272.2
B 12 111 33405 117.65 1415 1378 272.2
C 3 233 1021477 3239.97 1340 1350 314.9
C 14 238 215051 678.72 1340 1350 314.9
C 2 16 44788 137.96 1340 1350 314.9
D 1 52 2478076 7625.46 1350 1320 324.8
D 7 80 285367 874.53 1350 1320 324.8
D 12 233 133702 407.58 1350 1320 324.8

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