ASTROSAT CZTI

Data Quality Report

Orbit 23798

Creation date: 2024-06-27T18:58:50.837132
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_113T01_9000003526_23798cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23798cztM0_level2_quad_clean.evt
Size (bytes)686,266,560100,085,760
Size654.5 MB 95.4 MB
Events in quadrant A3,223,407672,574
Events in quadrant B5,489,329626,960
Events in quadrant C3,435,076678,501
Events in quadrant D8,203,954606,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135792
B0205632
C0142262
D0288853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6387831.299515%
B6387103616.220448%
C63871722.692970%
D6386122919.245224%

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 7517 6387 0 0 0.00% 0.00%
B 7516 6386 646 646 8.59% 10.12%
C 7517 6387 0 0 0.00% 0.00%
D 7516 6386 1065 1065 14.17% 16.68%

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 11021 60.83 835 818 167.7
A 3 137 7223 38.19 835 818 167.7
A 0 226 7194 38.02 835 818 167.7
B 3 64 2337664 15956.64 779 760 146.5
B 10 247 85527 578.8 779 760 146.5
B 12 111 17177 112.1 779 760 146.5
C 14 238 131987 692.34 820 829 189.4
C 7 247 97123 508.3 820 829 189.4
C 0 10 12111 59.55 820 829 189.4
D 8 195 3694480 19518.17 783 762 189.2
D 1 52 1065309 5625.23 783 762 189.2
D 13 174 451670 2382.67 783 762 189.2

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