ASTROSAT CZTI

Data Quality Report

Orbit 06775

Creation date: 2024-06-27T15:11:32.586451
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_086T02_9000000936_06775cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06775cztM0_level2_quad_clean.evt
Size (bytes)458,801,28089,735,040
Size437.5 MB 85.6 MB
Events in quadrant A3,148,253573,816
Events in quadrant B3,262,082583,920
Events in quadrant C3,096,467566,272
Events in quadrant D3,942,669536,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137503
B0140292
C0136532
D0162552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65481151.756261%
B65481512.306048%
C6548460.702505%
D65482053.130727%

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 9023 6550 0 0 0.00% 0.00%
B 9023 6550 11 11 0.12% 0.17%
C 9023 6550 0 0 0.00% 0.00%
D 9023 6550 95 95 1.05% 1.45%

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 8 15 20272 119.95 802 785 162.5
A 13 248 17934 105.56 802 785 162.5
A 0 23 11015 62.97 802 785 162.5
B 4 48 76645 491.19 808 788 154.4
B 0 214 20069 124.85 808 788 154.4
B 12 111 14899 91.37 808 788 154.4
C 9 247 52343 285.77 776 780 180.4
C 9 16 7069 34.85 776 780 180.4
C 13 61 6122 29.61 776 780 180.4
D 2 152 493464 2641.82 763 740 186.5
D 2 216 288404 1542.36 763 740 186.5
D 8 195 83997 446.4 763 740 186.5

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