ASTROSAT CZTI

Data Quality Report

Orbit 11771

Creation date: 2024-06-27T16:18:05.300344
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/AS1A04_231T01_9000001740_11771cztM0_level2.evt modeM0/AS1A04_231T01_9000001740_11771cztM0_level2_quad_clean.evt
Size (bytes)993,404,16089,663,040
Size947.4 MB 85.5 MB
Events in quadrant A3,987,740625,036
Events in quadrant B11,963,452519,982
Events in quadrant C3,265,703643,004
Events in quadrant D10,396,819437,701

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163322
B0403501
C0146161
D0356371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69864015.740052%
B6986377854.079588%
C69863104.437446%
D6986324446.435729%

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 7022 6989 7 7 0.10% 0.10%
B 7022 6989 2796 2796 39.82% 40.01%
C 7022 6989 2 2 0.03% 0.03%
D 7022 6989 2633 2633 37.50% 37.67%

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 8 15 435980 2534.62 826 802 171.7
A 1 162 129649 750.45 826 802 171.7
A 1 178 68984 397.11 826 802 171.7
B 10 16 7635079 55114.2 717 697 138.5
B 4 239 669892 4831.06 717 697 138.5
B 15 204 428901 3091.29 717 697 138.5
C 14 234 20542 103.06 823 823 191.3
C 14 128 16795 83.47 823 823 191.3
C 8 128 9269 44.14 823 823 191.3
D 1 52 7633601 50209.83 622 601 152.0
D 10 199 143436 939.57 622 601 152.0
D 13 104 120486 788.6 622 601 152.0

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