ASTROSAT CZTI

Data Quality Report

Orbit 16263

Creation date: 2024-06-27T17:20:07.046516
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/AS1T02_112T01_9000002390_16263cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16263cztM0_level2_quad_clean.evt
Size (bytes)1,528,920,000230,578,560
Size1.4 GB 219.9 MB
Events in quadrant A11,272,5251,436,553
Events in quadrant B15,134,5821,415,875
Events in quadrant C8,976,4401,453,759
Events in quadrant D9,686,8631,417,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455795
B0573484
C0383934
D0414794

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182787414.054054%
B18278188610.318416%
C182781440.787832%
D182783912.139184%

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 20364 18282 529 529 2.60% 2.89%
B 20364 18282 1200 1200 5.89% 6.56%
C 20364 18282 4 4 0.02% 0.02%
D 20364 18282 306 306 1.50% 1.67%

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 15 174 2717518 6288.8 2149 2106 431.8
A 9 143 234458 538.12 2149 2106 431.8
A 0 226 19318 39.86 2149 2106 431.8
B 3 112 5507402 13894.15 2095 2043 396.2
B 7 220 543090 1365.47 2095 2043 396.2
B 0 189 163671 407.91 2095 2043 396.2
C 3 233 324875 659.62 2090 2108 489.3
C 14 238 322589 654.95 2090 2108 489.3
C 0 207 135050 271.68 2090 2108 489.3
D 1 52 1639227 3206.71 2100 2038 510.6
D 2 234 73936 140.82 2100 2038 510.6
D 10 70 47185 88.43 2100 2038 510.6

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