ASTROSAT CZTI

Data Quality Report

Orbit 36283

Creation date: 2022-06-14T15:43:17.459973
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/AS1A10_071T35_9000005184_36283cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36283cztM0_level2_quad_clean.evt
Size (bytes)802,710,720140,512,320
Size765.5 MB 134.0 MB
Events in quadrant A4,656,904918,994
Events in quadrant B5,315,031925,482
Events in quadrant C5,051,747910,088
Events in quadrant D8,622,946820,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200053
B0220892
C0207612
D0322462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A981070.071356%
B98102122.161060%
C9810510.519878%
D9810105510.754332%

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 12404 9812 0 0 0.00% 0.00%
B 12404 9812 161 161 1.30% 1.64%
C 12404 9812 23 23 0.19% 0.23%
D 12404 9812 1054 1054 8.50% 10.74%

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 249289 1081.99 1128 1103 229.4
A 13 6 21852 90.46 1128 1103 229.4
A 9 143 18863 77.43 1128 1103 229.4
B 5 172 376152 1737.02 1110 1080 215.9
B 8 128 331594 1530.66 1110 1080 215.9
B 5 255 66067 300.97 1110 1080 215.9
C 15 214 408451 1585.74 1097 1104 256.9
C 0 10 220986 855.97 1097 1104 256.9
C 0 207 132995 513.43 1097 1104 256.9
D 12 227 1765728 6765.25 1059 1027 260.8
D 12 6 1736321 6652.51 1059 1027 260.8
D 13 171 329320 1258.56 1059 1027 260.8

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