ASTROSAT CZTI

Data Quality Report

Orbit 07988

Creation date: 2024-06-27T15:26:30.696979
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_168T20_9000001092_07988cztM0_level2.evt modeM0/AS1G06_168T20_9000001092_07988cztM0_level2_quad_clean.evt
Size (bytes)59,281,9204,089,600
Size56.5 MB 3.9 MB
Events in quadrant A371,08219,469
Events in quadrant B460,23118,965
Events in quadrant C559,39419,576
Events in quadrant D364,14418,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015661
B018011
C020791
D014601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54730.548446%
B547509.140768%
C547295.301645%
D547101.828154%

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 547 547 0 0 0.00% 0.00%
B 547 547 14 14 2.56% 2.56%
C 547 547 4 4 0.73% 0.73%
D 547 547 5 5 0.91% 0.91%

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 0 128 39339 2014.91 85 83 19.5
A 0 226 843 39.01 85 83 19.5
A 12 194 778 35.67 85 83 19.5
B 4 239 61512 3355.13 85 84 18.3
B 0 231 46971 2560.92 85 84 18.3
B 4 173 7615 411.33 85 84 18.3
C 1 16 215022 10003.2 85 85 21.5
C 10 22 10336 477.08 85 85 21.5
C 13 61 644 26.02 85 85 21.5
D 1 52 33271 1461.79 85 81 22.7
D 13 169 6211 269.98 85 81 22.7
D 12 233 1562 65.23 85 81 22.7

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