ASTROSAT CZTI

Data Quality Report

Orbit 20736

Creation date: 2024-06-27T18:18:59.309142
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_063T03_9000003066_20736cztM0_level2.evt modeM0/AS1A05_063T03_9000003066_20736cztM0_level2_quad_clean.evt
Size (bytes)652,832,640110,280,960
Size622.6 MB 105.2 MB
Events in quadrant A4,379,969694,596
Events in quadrant B4,646,321681,177
Events in quadrant C4,487,729667,297
Events in quadrant D5,625,913650,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202161215
B0215801862
C0204191223
D0251422208

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020410
B020412
C020312
D020412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9344700.749144%
B92731301.401920%
C93351141.221210%
D92501261.362162%

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 11526 9524 0 0 0.00% 0.00%
B 11527 9420 15 15 0.13% 0.16%
C 11527 9490 5 5 0.04% 0.05%
D 11527 9391 74 74 0.64% 0.79%

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 0 226 9810 37.87 1139 1114 229.6
A 3 137 9530 36.65 1139 1114 229.6
A 12 194 8134 30.57 1139 1114 229.6
B 7 220 162192 746.67 1118 1086 215.8
B 0 197 38879 175.16 1118 1086 215.8
B 12 111 26558 118.05 1118 1086 215.8
C 14 238 168418 656.04 1090 1098 255.0
C 3 233 34998 132.92 1090 1098 255.0
C 9 54 26964 101.42 1090 1098 255.0
D 1 20 705620 2627.16 1096 1063 268.2
D 1 52 290094 1077.74 1096 1063 268.2
D 5 222 255125 947.35 1096 1063 268.2

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