ASTROSAT CZTI

Data Quality Report

Orbit 14146

Creation date: 2024-06-27T16:51:01.711707
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/AS1A04_224T05_9000002088_14146cztM0_level2.evt modeM0/AS1A04_224T05_9000002088_14146cztM0_level2_quad_clean.evt
Size (bytes)658,434,240107,513,280
Size627.9 MB 102.5 MB
Events in quadrant A4,304,788662,735
Events in quadrant B4,380,422672,727
Events in quadrant C4,557,768688,395
Events in quadrant D6,109,531629,139

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184613
B0185652
C0185682
D0237192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8680941.082949%
B86801731.993088%
C8680710.817972%
D86806347.304147%

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 9231 8683 5 5 0.05% 0.06%
B 9231 8683 1 1 0.01% 0.01%
C 9231 8683 0 0 0.00% 0.00%
D 9231 8683 567 567 6.14% 6.53%

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 12 96 54825 240.13 1091 1066 223.9
A 12 189 30574 131.8 1091 1066 223.9
A 8 15 20187 85.41 1091 1066 223.9
B 0 214 44341 202.89 1093 1063 213.3
B 12 111 26288 118.26 1093 1063 213.3
B 11 111 22394 100.0 1093 1063 213.3
C 3 233 364703 1425.42 1075 1079 255.1
C 13 61 7519 25.24 1075 1079 255.1
C 14 234 4094 11.82 1075 1079 255.1
D 1 52 1911788 7658.89 1044 1018 249.5
D 8 195 110574 439.13 1044 1018 249.5
D 7 80 59565 234.67 1044 1018 249.5

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