ASTROSAT CZTI

Data Quality Report

Orbit 22821

Creation date: 2024-06-27T18:46:13.712370
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/AS1C05_012T02_9000003372_22821cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22821cztM0_level2_quad_clean.evt
Size (bytes)606,070,080106,597,440
Size578.0 MB 101.7 MB
Events in quadrant A3,225,016706,681
Events in quadrant B3,513,567710,854
Events in quadrant C3,367,975686,687
Events in quadrant D7,774,364636,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142322
B0150292
C0146762
D0281172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7000370.528571%
B70011131.614055%
C7001971.385516%
D7001110115.726325%

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 8695 7002 0 0 0.00% 0.00%
B 8696 7003 48 48 0.55% 0.69%
C 8696 7003 2 2 0.02% 0.03%
D 8696 7003 851 851 9.79% 12.15%

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 13 254 11438 63.49 832 813 167.4
A 13 252 7335 38.97 832 813 167.4
A 3 137 7284 38.67 832 813 167.4
B 0 229 250654 1594.86 826 805 156.7
B 12 111 19524 119.49 826 805 156.7
B 11 111 17216 104.75 826 805 156.7
C 14 238 128660 678.1 801 805 188.5
C 2 16 104557 550.26 801 805 188.5
C 0 239 7177 33.79 801 805 188.5
D 7 238 4798529 25849.81 769 746 185.6
D 1 52 30904 162.49 769 746 185.6
D 2 234 26843 140.61 769 746 185.6

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