ASTROSAT CZTI

Data Quality Report

Orbit 20599

Creation date: 2024-06-27T18:17:15.665016
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/AS1A06_003T04_9000003046_20599cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20599cztM0_level2_quad_clean.evt
Size (bytes)485,904,96090,722,880
Size463.4 MB 86.5 MB
Events in quadrant A3,389,179581,500
Events in quadrant B3,396,528593,836
Events in quadrant C3,407,450573,581
Events in quadrant D4,096,892560,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140881
B0140761
C0139651
D0164191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267991.579703%
B62681372.185705%
C62681492.377154%
D62681702.712189%

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 7397 6268 12 12 0.16% 0.19%
B 7398 6269 7 7 0.09% 0.11%
C 7398 6269 0 0 0.00% 0.00%
D 7398 6269 72 72 0.97% 1.15%

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 12 16 90215 535.47 824 808 167.0
A 5 16 71242 421.84 824 808 167.0
A 8 31 40059 235.08 824 808 167.0
B 0 190 62223 391.65 826 808 156.8
B 3 64 26853 166.09 826 808 156.8
B 0 189 22987 141.44 826 808 156.8
C 8 208 152483 812.66 802 808 186.6
C 14 238 125361 667.34 802 808 186.6
C 13 61 5772 26.6 802 808 186.6
D 1 20 644203 3270.0 811 789 196.8
D 2 165 241173 1221.69 811 789 196.8
D 5 222 59516 298.47 811 789 196.8

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