ASTROSAT CZTI

Data Quality Report

Orbit 21188

Creation date: 2024-06-27T18:24:42.351760
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_002T01_9000003134_21188cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21188cztM0_level2_quad_clean.evt
Size (bytes)568,494,720104,146,560
Size542.2 MB 99.3 MB
Events in quadrant A3,435,086704,945
Events in quadrant B3,533,961707,550
Events in quadrant C3,487,066666,925
Events in quadrant D6,323,561624,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145631
B0148001
C0146791
D0232681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463871.346124%
B6464691.067450%
C64631071.655578%
D64634927.612564%

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 7648 6463 2 2 0.03% 0.03%
B 7649 6464 6 6 0.08% 0.09%
C 7648 6464 12 12 0.16% 0.19%
D 7648 6463 336 336 4.39% 5.20%

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 13 252 181164 1068.45 839 825 168.8
A 5 16 14024 78.2 839 825 168.8
A 8 6 9298 50.2 839 825 168.8
B 0 182 71209 447.87 829 812 157.2
B 0 190 49137 307.45 829 812 157.2
B 3 64 41944 261.68 829 812 157.2
C 3 233 296590 1623.81 786 791 182.2
C 14 238 124865 681.11 786 791 182.2
C 13 61 5581 26.3 786 791 182.2
D 7 238 1388279 7255.44 785 763 191.2
D 1 20 1191299 6225.41 785 763 191.2
D 1 52 547944 2861.26 785 763 191.2

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