ASTROSAT CZTI

Data Quality Report

Orbit 35072

Creation date: 2022-03-24T20:34:13.403011
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_015T01_9000005026_35072cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35072cztM0_level2_quad_clean.evt
Size (bytes)474,900,48055,975,680
Size452.9 MB 53.4 MB
Events in quadrant A2,864,993333,086
Events in quadrant B3,859,420335,961
Events in quadrant C3,206,822332,700
Events in quadrant D4,086,382316,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118413
B0149212
C0127252
D0160122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5387130.241322%
B53872314.288101%
C5387641.188045%
D53871893.508446%

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 7331 5388 3 3 0.04% 0.06%
B 7331 5388 128 128 1.75% 2.38%
C 7331 5388 57 57 0.78% 1.06%
D 7331 5388 144 144 1.96% 2.67%

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 80740 562.01 715 704 142.4
A 9 143 11807 77.96 715 704 142.4
A 13 6 9580 62.33 715 704 142.4
B 5 172 915145 7012.87 696 679 130.4
B 0 189 73857 561.19 696 679 130.4
B 0 190 56777 430.21 696 679 130.4
C 15 214 226061 1430.06 688 695 157.6
C 0 10 204156 1291.06 688 695 157.6
C 14 67 54784 343.22 688 695 157.6
D 8 195 696676 4201.38 686 670 165.7
D 2 250 156255 939.17 686 670 165.7
D 13 249 146647 881.18 686 670 165.7

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