ASTROSAT CZTI

Data Quality Report

Orbit 37867

Creation date: 2024-06-27T21:45:27.987044
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/AS1C07_001T12_9000005352_37867cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37867cztM0_level2_quad_clean.evt
Size (bytes)404,997,120102,695,040
Size386.2 MB 97.9 MB
Events in quadrant A2,754,287714,588
Events in quadrant B2,909,507714,125
Events in quadrant C2,683,069677,929
Events in quadrant D3,574,293648,780

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111043
B0116692
C0108412
D0139402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5061170.335902%
B50611212.390832%
C5061280.553250%
D50611913.773958%

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 7064 5062 8 8 0.11% 0.16%
B 7064 5062 91 91 1.29% 1.80%
C 7064 5062 24 24 0.34% 0.47%
D 7064 5062 154 154 2.18% 3.04%

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 10 83 341562 2816.73 613 602 121.0
A 13 6 13842 109.38 613 602 121.0
A 7 3 12097 94.96 613 602 121.0
B 5 172 441215 3941.35 597 584 111.8
B 0 229 67430 597.92 597 584 111.8
B 0 230 36594 322.1 597 584 111.8
C 15 214 215402 1630.43 575 579 131.8
C 0 10 127983 966.95 575 579 131.8
C 14 67 49041 367.81 575 579 131.8
D 2 249 590647 4180.33 582 566 141.2
D 1 52 243960 1724.28 582 566 141.2
D 13 200 147106 1038.14 582 566 141.2

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