ASTROSAT CZTI

Data Quality Report

Orbit 33331

Creation date: 2024-06-27T20:47:38.567966
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/AS1T04_071T01_9000004782_33331cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33331cztM0_level2_quad_clean.evt
Size (bytes)541,589,76054,207,360
Size516.5 MB 51.7 MB
Events in quadrant A2,602,884326,546
Events in quadrant B4,229,318302,272
Events in quadrant C3,966,571317,100
Events in quadrant D5,222,048300,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113333
B0162052
C0154252
D0195382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A563420.035499%
B563462511.093362%
C56341372.431665%
D56341322.342918%

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 7217 5635 0 0 0.00% 0.00%
B 7217 5635 436 436 6.04% 7.74%
C 7217 5635 92 92 1.27% 1.63%
D 7217 5635 120 120 1.66% 2.13%

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 13 6 9176 63.17 671 658 134.9
A 3 137 6644 44.39 671 658 134.9
A 13 254 6152 40.74 671 658 134.9
B 5 172 1383385 11276.49 634 619 122.6
B 0 219 215351 1751.14 634 619 122.6
B 4 170 91527 741.36 634 619 122.6
C 10 49 897118 5997.55 645 652 149.5
C 15 214 262464 1751.58 645 652 149.5
C 0 10 172224 1147.85 645 652 149.5
D 8 195 1952271 12318.56 643 624 158.4
D 12 218 173287 1089.83 643 624 158.4
D 13 249 164416 1033.84 643 624 158.4

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