ASTROSAT CZTI

Data Quality Report

Orbit 16028

Creation date: 2024-06-27T17:16:59.531853
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/AS1T02_091T01_9000002368_16028cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16028cztM0_level2_quad_clean.evt
Size (bytes)536,820,480113,676,480
Size512.0 MB 108.4 MB
Events in quadrant A3,806,918736,185
Events in quadrant B4,037,714744,051
Events in quadrant C4,136,029716,882
Events in quadrant D3,747,452703,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164163
B0170812
C0175162
D0165642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7808851.088627%
B78081582.023566%
C78081602.049180%
D7808630.806865%

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 8419 7810 0 0 0.00% 0.00%
B 8419 7810 1 1 0.01% 0.01%
C 8419 7810 0 0 0.00% 0.00%
D 8419 7811 11 11 0.13% 0.14%

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 9 143 12720 58.54 984 966 200.8
A 0 226 8674 38.39 984 966 200.8
A 12 194 7389 31.99 984 966 200.8
B 0 189 73108 377.27 990 968 191.2
B 7 220 36504 185.84 990 968 191.2
B 12 111 21501 107.38 990 968 191.2
C 3 233 278658 1233.79 946 951 225.1
C 14 238 144734 638.8 946 951 225.1
C 8 128 11830 48.33 946 951 225.1
D 2 152 73962 307.87 955 928 237.2
D 2 234 29430 120.15 955 928 237.2
D 15 145 18001 71.97 955 928 237.2

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