ASTROSAT CZTI

Data Quality Report

Orbit 07934

Creation date: 2024-06-27T15:25:43.325631
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/AS1G06_117T01_9000001086_07934cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07934cztM0_level2_quad_clean.evt
Size (bytes)465,946,560101,560,320
Size444.4 MB 96.9 MB
Events in quadrant A3,312,987638,990
Events in quadrant B3,491,033657,485
Events in quadrant C3,276,932652,962
Events in quadrant D3,533,795618,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149943
B0154152
C0149682
D0159392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7294410.562106%
B7294700.959693%
C7294210.287908%
D7294771.055662%

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 9329 7296 1 1 0.01% 0.01%
B 9329 7296 4 4 0.04% 0.05%
C 9329 7296 0 0 0.00% 0.00%
D 9329 7296 40 40 0.43% 0.55%

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 13 251 21506 118.72 855 836 174.1
A 0 226 8026 41.3 855 836 174.1
A 12 194 7379 37.58 855 836 174.1
B 11 51 41283 242.77 866 844 166.6
B 4 239 30065 175.42 866 844 166.6
B 12 111 18339 105.03 866 844 166.6
C 13 61 6379 28.48 837 840 194.5
C 12 4 4664 19.66 837 840 194.5
C 1 16 4490 18.77 837 840 194.5
D 1 52 141505 694.02 828 802 202.7
D 5 233 129075 632.71 828 802 202.7
D 4 95 71688 349.65 828 802 202.7

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