ASTROSAT CZTI

Data Quality Report

Orbit 37619

Creation date: 2024-06-27T21:42:16.268153
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/AS1A11_075T01_9000005342_37619cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37619cztM0_level2_quad_clean.evt
Size (bytes)613,140,48060,563,520
Size584.7 MB 57.8 MB
Events in quadrant A8,541,871276,631
Events in quadrant B3,087,628398,043
Events in quadrant C2,894,739399,966
Events in quadrant D3,677,256378,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290733
B0126692
C0117772
D0146412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5419235643.476656%
B54191252.306699%
C5419641.181030%
D54192053.782986%

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 7182 5420 2110 2110 29.38% 38.93%
B 7181 5418 71 71 0.99% 1.31%
C 7182 5419 46 46 0.64% 0.85%
D 7182 5420 177 177 2.46% 3.27%

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 15 222 6200433 59675.36 516 507 103.9
A 10 83 279919 2689.39 516 507 103.9
A 9 143 30248 286.26 516 507 103.9
B 5 172 220045 1797.21 638 622 122.1
B 5 200 83151 675.96 638 622 122.1
B 0 189 77496 629.65 638 622 122.1
C 15 214 247840 1680.92 631 635 147.1
C 0 10 157977 1069.88 631 635 147.1
C 14 254 16655 108.93 631 635 147.1
D 2 250 515342 3388.57 621 603 151.9
D 13 249 270708 1778.12 621 603 151.9
D 1 47 145164 951.66 621 603 151.9

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