ASTROSAT CZTI

Data Quality Report

Orbit 08172

Creation date: 2024-06-27T15:28:53.667730
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/AS1G07_043T01_9000001126_08172cztM0_level2.evt modeM0/AS1G07_043T01_9000001126_08172cztM0_level2_quad_clean.evt
Size (bytes)1,479,548,160288,455,040
Size1.4 GB 275.1 MB
Events in quadrant A10,976,1031,773,574
Events in quadrant B11,730,4491,804,637
Events in quadrant C10,060,4881,823,638
Events in quadrant D10,476,5011,743,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489956
B0509645
C0470015
D0483605

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231241320.570835%
B231245222.257395%
C23124830.358934%
D23124970.419478%

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 25594 23129 0 0 0.00% 0.00%
B 25594 23129 300 300 1.17% 1.30%
C 25594 23129 0 0 0.00% 0.00%
D 25594 23129 37 37 0.14% 0.16%

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 15 79 781795 1449.65 2642 2579 537.5
A 0 226 24936 41.59 2642 2579 537.5
A 12 194 23796 39.47 2642 2579 537.5
B 4 173 613749 1225.61 2638 2574 498.7
B 10 16 277551 551.42 2638 2574 498.7
B 0 214 238862 473.84 2638 2574 498.7
C 13 61 19879 29.1 2576 2588 594.2
C 1 16 8257 9.54 2576 2588 594.2
C 12 4 7482 8.24 2576 2588 594.2
D 2 14 214943 338.94 2570 2492 626.8
D 6 225 125125 195.65 2570 2492 626.8
D 12 233 92887 144.22 2570 2492 626.8

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