ASTROSAT CZTI

Data Quality Report

Orbit 36577

Creation date: 2024-06-27T21:28:39.455213
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_097T17_9000005222_36577cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36577cztM0_level2_quad_clean.evt
Size (bytes)465,350,40055,802,880
Size443.8 MB 53.2 MB
Events in quadrant A2,984,892337,678
Events in quadrant B2,874,886342,185
Events in quadrant C3,618,669332,374
Events in quadrant D4,246,967297,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120493
B0117832
C0139922
D0161902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5420270.498155%
B5420130.239852%
C54202093.856089%
D54203656.734317%

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 7243 5421 9 9 0.12% 0.17%
B 7243 5421 3 3 0.04% 0.06%
C 7243 5421 155 155 2.14% 2.86%
D 7243 5421 296 296 4.09% 5.46%

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 199819 1474.91 670 659 135.0
A 15 223 122589 902.97 670 659 135.0
A 9 143 61213 448.44 670 659 135.0
B 0 213 119759 933.96 668 651 127.5
B 5 255 50578 391.49 668 651 127.5
B 0 219 20340 154.39 668 651 127.5
C 0 10 703013 4771.27 634 641 147.2
C 15 214 230244 1559.71 634 641 147.2
C 0 207 118190 798.52 634 641 147.2
D 12 235 985467 6487.89 628 613 151.8
D 13 249 210982 1385.84 628 613 151.8
D 12 16 157411 1032.93 628 613 151.8

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