ASTROSAT CZTI

Data Quality Report

Orbit 11831

Creation date: 2024-06-27T16:18:52.752153
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_022T07_9000001748_11831cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11831cztM0_level2_quad_clean.evt
Size (bytes)989,331,84084,755,520
Size943.5 MB 80.8 MB
Events in quadrant A3,734,374609,254
Events in quadrant B17,774,736219,039
Events in quadrant C3,425,516622,770
Events in quadrant D4,515,302586,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160452
B0578401
C0155571
D0185371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75732052.706985%
B7573645285.197412%
C75731001.320481%
D75733054.027466%

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 7769 7575 6 6 0.08% 0.08%
B 7769 7575 6214 6214 79.98% 82.03%
C 7769 7575 6 6 0.08% 0.08%
D 7769 7575 168 168 2.16% 2.22%

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 1 162 125151 680.62 889 868 182.6
A 1 178 59462 320.88 889 868 182.6
A 1 161 52688 283.78 889 868 182.6
B 10 16 15373294 207960.81 384 375 73.9
B 4 239 423893 5729.24 384 375 73.9
B 15 204 239711 3237.67 384 375 73.9
C 7 238 30889 147.11 868 871 204.0
C 13 61 6261 26.42 868 871 204.0
C 8 128 4628 18.41 868 871 204.0
D 12 233 510319 2416.93 862 835 210.8
D 1 52 387768 1835.56 862 835 210.8
D 9 85 107656 506.75 862 835 210.8

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