ASTROSAT CZTI

Data Quality Report

Orbit 30817

Creation date: 2024-06-27T20:19:58.075389
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/AS1C06_003T01_9000004452_30817cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30817cztM0_level2_quad_clean.evt
Size (bytes)637,067,52096,865,920
Size607.6 MB 92.4 MB
Events in quadrant A3,399,368652,452
Events in quadrant B5,116,361657,000
Events in quadrant C3,753,455613,013
Events in quadrant D6,605,320577,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138142
B0192504
C0150362
D0240892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6209651.046867%
B6209881.417297%
C62091131.819939%
D62093315.330971%

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 7554 6211 44 44 0.58% 0.71%
B 7554 6210 8 8 0.11% 0.13%
C 7554 6210 19 19 0.25% 0.31%
D 7554 6209 224 224 2.97% 3.61%

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 13 311107 1954.85 800 787 158.7
A 13 254 11156 65.32 800 787 158.7
A 3 137 7318 41.14 800 787 158.7
B 6 159 1819914 12411.7 795 777 146.6
B 5 172 80326 542.75 795 777 146.6
B 0 230 19765 129.55 795 777 146.6
C 3 233 568378 3259.65 755 761 174.1
C 14 238 125096 714.02 755 761 174.1
C 0 10 79190 450.39 755 761 174.1
D 8 195 3336819 19122.25 741 724 174.5
D 12 218 275225 1573.42 741 724 174.5
D 2 250 56577 320.15 741 724 174.5

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