ASTROSAT CZTI

Data Quality Report

Orbit 24337

Creation date: 2024-06-27T19:04:55.833697
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/AS1A07_145T01_9000003594_24337cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24337cztM0_level2_quad_clean.evt
Size (bytes)651,237,12086,990,400
Size621.1 MB 83.0 MB
Events in quadrant A3,286,547543,785
Events in quadrant B3,344,989562,173
Events in quadrant C6,569,097522,545
Events in quadrant D6,047,186516,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144231
B0144851
C0245341
D0227948

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70292263.215251%
B70292313.286385%
C70294105.832978%
D702986912.363067%

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 7153 7029 0 0 0.00% 0.00%
B 7153 7028 1 1 0.01% 0.01%
C 7153 7028 0 0 0.00% 0.00%
D 7153 7028 643 643 8.99% 9.15%

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 13 254 10457 55.35 852 831 173.9
A 3 137 7984 41.13 852 831 173.9
A 0 226 7384 37.68 852 831 173.9
B 12 111 20523 119.64 849 824 164.6
B 11 111 18628 108.13 849 824 164.6
B 14 111 16570 95.63 849 824 164.6
C 7 247 3222710 17049.57 809 811 189.0
C 14 238 126988 667.7 809 811 189.0
C 2 16 37921 196.38 809 811 189.0
D 7 238 2239774 11416.67 802 774 196.1
D 8 195 514086 2617.38 802 774 196.1
D 12 233 182045 924.3 802 774 196.1

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