ASTROSAT CZTI

Data Quality Report

Orbit 19701

Creation date: 2024-06-27T18:05:46.225758
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/AS1A05_013T01_9000002944_19701cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19701cztM0_level2_quad_clean.evt
Size (bytes)473,169,60079,773,120
Size451.2 MB 76.1 MB
Events in quadrant A3,259,172495,192
Events in quadrant B3,543,849509,360
Events in quadrant C3,409,054487,574
Events in quadrant D3,674,778468,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136412
B0144112
C0138552
D0150432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6528410.628064%
B6528721.102941%
C6528671.026348%
D65281011.547181%

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 7818 6529 4 4 0.05% 0.06%
B 7818 6529 17 17 0.22% 0.26%
C 7818 6529 0 0 0.00% 0.00%
D 7818 6528 41 41 0.52% 0.63%

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 5 16 54728 324.12 832 816 166.3
A 0 226 7315 39.07 832 816 166.3
A 13 254 6696 35.35 832 816 166.3
B 0 189 179141 1139.57 842 823 156.5
B 4 216 29336 182.22 842 823 156.5
B 12 111 18439 112.58 842 823 156.5
C 14 238 129784 683.18 817 828 188.8
C 3 233 82310 431.67 817 828 188.8
C 9 221 7757 36.71 817 828 188.8
D 2 16 349214 1774.45 816 796 196.4
D 12 218 123959 627.25 816 796 196.4
D 1 52 87070 439.38 816 796 196.4

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