ASTROSAT CZTI

Data Quality Report

Orbit 36346

Creation date: 2022-06-18T20:49:36.535826
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_103T02_9000005192_36346cztM0_level2.evt modeM0/AS1A10_103T02_9000005192_36346cztM0_level2_quad_clean.evt
Size (bytes)596,931,840100,647,360
Size569.3 MB 96.0 MB
Events in quadrant A2,847,799723,701
Events in quadrant B7,209,975592,210
Events in quadrant C3,332,989699,667
Events in quadrant D4,316,755648,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119613
B0250862
C0132192
D0164512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5471240.438677%
B5471176932.334125%
C5471921.681594%
D54714548.298300%

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 7384 5472 8 8 0.11% 0.15%
B 7384 5472 1589 1589 21.52% 29.04%
C 7384 5472 85 85 1.15% 1.55%
D 7384 5471 478 478 6.47% 8.74%

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 194079 1463.37 662 652 132.2
A 9 143 38137 283.59 662 652 132.2
A 7 16 21369 156.73 662 652 132.2
B 4 171 3818418 36213.95 561 548 105.4
B 5 172 681863 6462.53 561 548 105.4
B 5 236 203395 1924.08 561 548 105.4
C 0 207 371227 2592.27 628 634 143.0
C 0 10 279336 1949.5 628 634 143.0
C 15 214 231903 1617.71 628 634 143.0
D 12 6 1328792 8971.54 614 598 148.0
D 13 249 118625 797.24 614 598 148.0
D 15 0 115326 774.95 614 598 148.0

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