ASTROSAT CZTI

Data Quality Report

Orbit 50213

Creation date: 2025-01-09T15:12:21.661119
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/AS1C09_003T01_9000006442_50213cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50213cztM0_level2_quad_clean.evt
Size (bytes)1,043,187,84064,272,960
Size994.9 MB 61.3 MB
Events in quadrant A6,412,644541,517
Events in quadrant B4,620,389642,421
Events in quadrant C14,259,83391,090
Events in quadrant D12,813,829211,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235861
B0183171
C0468201
D0426331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657989213.558292%
B65803305.015198%
C6580569886.595745%
D6580434366.003040%

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 7479 6579 778 778 10.40% 11.83%
B 7480 6580 193 193 2.58% 2.93%
C 7480 6580 4817 4817 64.40% 73.21%
D 7479 6579 3188 3188 42.63% 48.46%

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 98 1767237 10756.69 660 643 164.2
A 3 231 420937 2559.15 660 643 164.2
A 8 38 387075 2352.96 660 643 164.2
B 4 206 1212865 8309.65 680 656 145.9
B 3 249 231745 1584.11 680 656 145.9
B 8 128 95176 647.93 680 656 145.9
C 4 111 10108987 139969.98 250 248 72.2
C 15 197 1104641 15291.9 250 248 72.2
C 15 213 948566 13130.82 250 248 72.2
D 7 61 4117893 35683.58 398 385 115.4
D 11 245 1306870 11322.4 398 385 115.4
D 15 108 1196171 10363.05 398 385 115.4

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