ASTROSAT CZTI

Data Quality Report

Orbit 20422

Creation date: 2024-06-27T18:15:13.000087
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_188T01_9000003018_20422cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20422cztM0_level2_quad_clean.evt
Size (bytes)477,947,52079,439,040
Size455.8 MB 75.8 MB
Events in quadrant A3,222,329505,447
Events in quadrant B3,450,913516,219
Events in quadrant C3,227,376486,005
Events in quadrant D4,154,733466,445

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133192
B0139683
C0132452
D0165102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6179230.372229%
B6178440.712205%
C6178420.679832%
D61781852.994497%

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 7514 6180 0 0 0.00% 0.00%
B 7513 6179 9 9 0.12% 0.15%
C 7513 6179 0 0 0.00% 0.00%
D 7513 6179 167 167 2.22% 2.70%

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 10659 60.35 833 819 163.1
A 0 226 7229 39.31 833 819 163.1
A 3 137 6370 34.04 833 819 163.1
B 10 245 80947 524.89 832 816 152.7
B 0 219 34628 221.48 832 816 152.7
B 4 216 34121 218.16 832 816 152.7
C 14 238 128516 707.82 788 796 180.4
C 8 128 12207 63.24 788 796 180.4
C 8 112 5600 26.62 788 796 180.4
D 2 16 522481 2787.25 786 766 187.2
D 13 153 362506 1932.59 786 766 187.2
D 1 52 241778 1287.6 786 766 187.2

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