ASTROSAT CZTI

Data Quality Report

Orbit 26635

Creation date: 2024-06-27T19:31:14.124923
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_145T01_9000003848_26635cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26635cztM0_level2_quad_clean.evt
Size (bytes)602,841,60078,897,600
Size574.9 MB 75.2 MB
Events in quadrant A3,664,730503,769
Events in quadrant B4,223,320498,476
Events in quadrant C3,917,545482,239
Events in quadrant D6,006,826446,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146730
B0167060
C0156920
D0222450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65651191.812643%
B65662303.502894%
C65661512.299726%
D656669010.508681%

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 7785 6566 17 17 0.22% 0.26%
B 7786 6567 86 86 1.10% 1.31%
C 7786 6567 8 8 0.10% 0.12%
D 7786 6567 560 560 7.19% 8.53%

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 103561 557.01 922 907 184.3
A 13 254 10759 53.46 922 907 184.3
A 0 226 8167 39.39 922 907 184.3
B 10 245 362096 2159.86 900 883 167.2
B 0 189 232766 1386.54 900 883 167.2
B 3 112 87275 516.58 900 883 167.2
C 3 233 244284 1202.87 876 885 202.3
C 14 238 143324 703.93 876 885 202.3
C 2 16 109418 536.36 876 885 202.3
D 1 52 2282472 10628.53 868 845 214.7
D 7 80 260521 1209.65 868 845 214.7
D 2 250 110792 512.17 868 845 214.7

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