ASTROSAT CZTI

Data Quality Report

Orbit 31440

Creation date: 2024-06-27T20:28:32.136258
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/AS1C06_005T01_9000004580_31440cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31440cztM0_level2_quad_clean.evt
Size (bytes)606,107,52082,563,840
Size578.0 MB 78.7 MB
Events in quadrant A2,234,568690,357
Events in quadrant B10,248,822153,341
Events in quadrant C2,560,064688,488
Events in quadrant D3,022,871665,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105871419
B0398746589
C0118511527
D0148293094

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081
B080
C091
D091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010517
B010313
C010620
D010313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4313100.231857%
B4166379491.070571%
C43172154.980310%
D4268491.148079%

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 7538 4380 0 0 0.00% 0.00%
B 7537 4173 3677 3677 48.79% 88.11%
C 7538 4387 1 1 0.01% 0.02%
D 7538 4346 34 34 0.45% 0.78%

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 13 254 8124 66.36 578 569 113.8
A 3 137 5158 40.31 578 569 113.8
A 0 226 4797 37.14 578 569 113.8
B 12 1 9147423 269095.14 175 171 34.0
B 6 159 374465 11011.03 175 171 34.0
B 4 80 32551 952.56 175 171 34.0
C 14 238 140626 1047.13 578 583 133.7
C 14 254 65819 487.79 578 583 133.7
C 3 233 44938 331.65 578 583 133.7
D 8 195 338667 2498.74 572 558 135.3
D 1 52 325261 2399.66 572 558 135.3
D 12 218 140092 1031.2 572 558 135.3

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