ASTROSAT CZTI

Data Quality Report

Orbit 20500

Creation date: 2024-06-27T18:16:05.420383
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_115T01_9000003030_20500cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20500cztM0_level2_quad_clean.evt
Size (bytes)634,835,52079,001,280
Size605.4 MB 75.3 MB
Events in quadrant A3,879,498483,264
Events in quadrant B4,026,196486,542
Events in quadrant C3,730,255466,187
Events in quadrant D7,067,405419,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165482
B0167372
C0160353
D0263322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77133184.122909%
B77133454.472968%
C77122993.877075%
D77127629.880705%

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 7798 7713 6 6 0.08% 0.08%
B 7798 7713 2 2 0.03% 0.03%
C 7797 7712 0 0 0.00% 0.00%
D 7797 7712 492 492 6.31% 6.38%

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 96 126247 649.48 950 924 193.0
A 5 16 96219 493.86 950 924 193.0
A 0 226 8215 37.79 950 924 193.0
B 0 189 119831 646.87 953 925 183.8
B 0 197 46639 248.69 953 925 183.8
B 0 190 25812 135.39 953 925 183.8
C 14 238 138794 634.48 917 921 217.3
C 7 220 7906 32.14 917 921 217.3
C 3 233 7365 29.65 917 921 217.3
D 2 16 1901703 8528.92 901 873 222.9
D 1 52 1087192 4874.26 901 873 222.9
D 7 96 259541 1160.63 901 873 222.9

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