ASTROSAT CZTI

Data Quality Report

Orbit 04082

Creation date: 2024-06-27T14:37:08.599424
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/AS1G05_222T01_9000000520_04082cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04082cztM0_level2_quad_clean.evt
Size (bytes)451,609,92078,652,800
Size430.7 MB 75.0 MB
Events in quadrant A3,395,838492,311
Events in quadrant B3,709,122496,221
Events in quadrant C2,922,543489,810
Events in quadrant D3,229,412471,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140683
B0150642
C0127032
D0138472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183600.970403%
B61832233.606663%
C6183100.161734%
D6183791.277697%

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 7513 6184 19 19 0.25% 0.31%
B 7513 6184 174 174 2.32% 2.81%
C 7513 6184 0 0 0.00% 0.00%
D 7513 6184 51 51 0.68% 0.82%

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 0 199 327248 2133.03 755 740 153.1
A 0 118 50489 325.0 755 740 153.1
A 0 226 42380 272.03 755 740 153.1
B 14 167 647915 4449.63 763 746 145.4
B 10 16 30549 204.91 763 746 145.4
B 0 183 27420 183.4 763 746 145.4
C 9 144 8124 42.84 745 749 172.2
C 13 61 6063 30.87 745 749 172.2
C 12 4 3477 15.85 745 749 172.2
D 10 172 141976 792.3 734 714 178.3
D 13 239 105913 590.03 734 714 178.3
D 12 233 90815 505.35 734 714 178.3

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