ASTROSAT CZTI

Data Quality Report

Orbit 02981

Creation date: 2024-06-27T14:23:01.944347
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/AS1G05_238T05_9000000418_02981cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02981cztM0_level2_quad_clean.evt
Size (bytes)441,043,20084,064,320
Size420.6 MB 80.2 MB
Events in quadrant A4,029,439540,050
Events in quadrant B2,815,486561,670
Events in quadrant C2,387,257544,565
Events in quadrant D3,766,413529,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155693
B0116512
C0107342
D0146882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52883095.843419%
B5288781.475038%
C528880.151286%
D5288841.588502%

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 7444 5289 224 224 3.01% 4.24%
B 7444 5289 64 64 0.86% 1.21%
C 7444 5289 3 3 0.04% 0.06%
D 7444 5289 84 84 1.13% 1.59%

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 9 1424340 11887.42 597 585 119.8
A 14 63 106310 882.73 597 585 119.8
A 14 238 57391 474.29 597 585 119.8
B 3 11 176845 1488.62 614 602 118.4
B 0 219 94776 795.43 614 602 118.4
B 6 203 71996 603.02 614 602 118.4
C 6 80 29985 214.88 587 592 136.8
C 15 208 21528 153.05 587 592 136.8
C 12 4 7318 49.17 587 592 136.8
D 13 114 1120273 8056.58 589 576 139.0
D 2 136 175490 1258.56 589 576 139.0
D 1 31 95316 681.68 589 576 139.0

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