ASTROSAT CZTI

Data Quality Report

Orbit 36219

Creation date: 2022-06-10T13:08:34.727307
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/AS1A11_080T02_9000005176_36219cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36219cztM0_level2_quad_clean.evt
Size (bytes)543,997,44047,727,360
Size518.8 MB 45.5 MB
Events in quadrant A2,652,996286,380
Events in quadrant B3,324,421292,884
Events in quadrant C3,063,229279,484
Events in quadrant D7,100,052239,116

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109273
B0130582
C0119932
D0245382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945140.283114%
B49451482.992922%
C49451302.628918%
D4945109122.062690%

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 7068 4946 4 4 0.06% 0.08%
B 7068 4946 95 95 1.34% 1.92%
C 7068 4946 109 109 1.54% 2.20%
D 7068 4946 1053 1053 14.90% 21.29%

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 173839 1473.95 587 576 117.6
A 15 223 140848 1193.3 587 576 117.6
A 7 16 32591 272.35 587 576 117.6
B 5 172 420638 3779.63 584 568 111.1
B 5 236 170567 1529.58 584 568 111.1
B 0 213 97727 874.2 584 568 111.1
C 0 10 409634 3078.19 568 572 132.9
C 15 214 204956 1537.99 568 572 132.9
C 0 207 193850 1454.41 568 572 132.9
D 12 227 3449108 26813.44 525 511 128.6
D 12 6 745749 5794.35 525 511 128.6
D 12 235 404227 3138.96 525 511 128.6

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