ASTROSAT CZTI

Data Quality Report

Orbit 26319

Creation date: 2024-06-27T19:27:25.440454
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/AS1A09_008T02_9000003796_26319cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26319cztM0_level2_quad_clean.evt
Size (bytes)505,117,440105,739,200
Size481.7 MB 100.8 MB
Events in quadrant A3,123,241690,961
Events in quadrant B3,352,664707,312
Events in quadrant C3,948,869679,298
Events in quadrant D4,409,205649,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138330
B0144310
C0159680
D0175920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6819530.777240%
B68191041.525150%
C68192553.739551%
D68194126.041942%

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 7204 6821 0 0 0.00% 0.00%
B 7204 6821 19 19 0.26% 0.28%
C 7204 6821 63 63 0.87% 0.92%
D 7204 6820 323 323 4.48% 4.74%

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 10313 58.53 809 792 162.7
A 3 137 7524 41.38 809 792 162.7
A 0 226 6728 36.49 809 792 162.7
B 12 16 187446 1216.12 805 782 153.5
B 12 111 18872 117.86 805 782 153.5
B 11 111 16729 103.9 805 782 153.5
C 3 233 726166 3973.3 785 788 182.6
C 14 238 127071 691.72 785 788 182.6
C 2 16 33259 177.86 785 788 182.6
D 11 176 828145 4543.3 770 752 182.1
D 1 52 538442 2952.51 770 752 182.1
D 12 233 104606 570.27 770 752 182.1

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