ASTROSAT CZTI

Data Quality Report

Orbit 45734

Creation date: 2024-06-27T23:15:33.045219
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/AS1T05_183T01_9000006124_45734cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45734cztM0_level2_quad_clean.evt
Size (bytes)594,155,520112,875,840
Size566.6 MB 107.6 MB
Events in quadrant A6,275,427771,130
Events in quadrant B4,391,406797,815
Events in quadrant C3,852,223773,014
Events in quadrant D6,973,738624,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226094
B0171152
C0155602
D0250932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64693245.008502%
B64692944.544752%
C64692583.988252%
D6469109416.911424%

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 7609 6470 40 40 0.53% 0.62%
B 7609 6470 83 83 1.09% 1.28%
C 7609 6470 182 182 2.39% 2.81%
D 7609 6470 1090 1090 14.33% 16.85%

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 2991264 17989.36 802 787 166.2
A 9 191 148078 886.04 802 787 166.2
A 13 254 10976 61.29 802 787 166.2
B 3 112 426923 2742.3 796 774 155.4
B 5 172 337706 2168.18 796 774 155.4
B 5 255 121899 779.45 796 774 155.4
C 14 254 655057 3567.76 785 792 183.4
C 0 207 63798 343.57 785 792 183.4
C 3 233 29544 156.78 785 792 183.4
D 1 52 3502240 18570.11 752 730 188.6
D 13 249 156482 826.02 752 730 188.6
D 2 249 119158 628.08 752 730 188.6

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