ASTROSAT CZTI

Data Quality Report

Orbit 36262

Creation date: 2022-06-13T15:19:13.809593
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_071T36_9000005182_36262cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36262cztM0_level2_quad_clean.evt
Size (bytes)405,267,84059,374,080
Size386.5 MB 56.6 MB
Events in quadrant A2,494,891372,560
Events in quadrant B3,210,684379,932
Events in quadrant C2,815,295363,155
Events in quadrant D3,417,077335,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103943
B0125402
C0111982
D0134202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493980.161976%
B49391563.158534%
C4939992.004454%
D49392174.393602%

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 7062 4940 0 0 0.00% 0.00%
B 7062 4940 133 133 1.88% 2.69%
C 7062 4940 82 82 1.16% 1.66%
D 7062 4940 200 200 2.83% 4.05%

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 166674 1379.43 598 586 120.4
A 13 254 7738 59.4 598 586 120.4
A 0 31 7454 57.04 598 586 120.4
B 5 172 489856 4305.32 595 581 113.6
B 5 236 201197 1765.3 595 581 113.6
B 8 128 68418 596.92 595 581 113.6
C 0 10 340871 2520.53 578 582 135.0
C 15 214 206659 1526.42 578 582 135.0
C 15 208 9521 66.21 578 582 135.0
D 12 6 613700 4432.36 564 549 138.3
D 13 171 144053 1037.36 564 549 138.3
D 2 153 132429 953.34 564 549 138.3

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