ASTROSAT CZTI

Data Quality Report

Orbit 20717

Creation date: 2024-06-27T18:18:43.650304
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_165T07_9000003062_20717cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20717cztM0_level2_quad_clean.evt
Size (bytes)552,427,200104,581,440
Size526.8 MB 99.7 MB
Events in quadrant A3,430,124691,704
Events in quadrant B3,746,787678,964
Events in quadrant C3,409,782656,646
Events in quadrant D5,651,311634,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149882
B0159103
C0149152
D0216572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7256380.523705%
B72551301.791868%
C7255580.799449%
D72553204.410751%

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 7591 7257 0 0 0.00% 0.00%
B 7590 7256 29 29 0.38% 0.40%
C 7590 7256 0 0 0.00% 0.00%
D 7590 7256 290 290 3.82% 4.00%

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 5 16 30401 165.75 881 863 178.2
A 0 226 7576 37.67 881 863 178.2
A 3 137 7145 35.25 881 863 178.2
B 7 220 204694 1230.86 867 847 165.6
B 0 190 69232 412.92 867 847 165.6
B 3 64 21628 125.48 867 847 165.6
C 14 238 127952 656.81 827 830 193.5
C 7 247 40448 204.7 827 830 193.5
C 8 208 11409 54.66 827 830 193.5
D 1 52 1023448 5073.33 829 804 201.6
D 5 222 494199 2447.73 829 804 201.6
D 1 20 329987 1633.07 829 804 201.6

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