ASTROSAT CZTI

Data Quality Report

Orbit 15737

Creation date: 2024-06-27T17:12:49.442608
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/AS1C03_015T04_9000002328_15737cztM0_level2.evt modeM0/AS1C03_015T04_9000002328_15737cztM0_level2_quad_clean.evt
Size (bytes)248,342,40067,538,880
Size236.8 MB 64.4 MB
Events in quadrant A1,615,169454,079
Events in quadrant B1,683,016463,590
Events in quadrant C2,135,241435,096
Events in quadrant D1,834,048430,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074460
B075520
C088840
D079030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A370410.026998%
B370470.188985%
C3704220.593952%
D3704150.404968%

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 3705 3705 0 0 0.00% 0.00%
B 3705 3705 0 0 0.00% 0.00%
C 3705 3705 0 0 0.00% 0.00%
D 3705 3705 12 12 0.32% 0.32%

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 9 143 13460 154.48 414 405 84.5
A 13 248 5307 58.01 414 405 84.5
A 0 226 3741 39.47 414 405 84.5
B 4 216 37691 465.7 414 403 80.1
B 5 65 12407 149.92 414 403 80.1
B 12 111 8654 103.05 414 403 80.1
C 3 233 514461 5619.32 393 394 91.5
C 14 238 62462 678.47 393 394 91.5
C 7 247 17586 187.93 393 394 91.5
D 1 52 153741 1568.46 401 388 97.8
D 12 6 87073 886.59 401 388 97.8
D 12 221 28500 287.52 401 388 97.8

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