ASTROSAT CZTI

Data Quality Report

Orbit 11853

Creation date: 2024-06-27T16:19:09.497750
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/AS1A04_088T03_9000001750_11853cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11853cztM0_level2_quad_clean.evt
Size (bytes)440,136,00097,712,640
Size419.7 MB 93.2 MB
Events in quadrant A3,134,555643,113
Events in quadrant B3,618,157652,666
Events in quadrant C2,849,890639,088
Events in quadrant D3,312,465598,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134073
B0147932
C0126412
D0141472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100380.622951%
B61001712.803279%
C610070.114754%
D6100751.229508%

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 7411 6102 1 1 0.01% 0.02%
B 7411 6102 73 73 0.99% 1.20%
C 7411 6102 0 0 0.00% 0.00%
D 7411 6102 48 48 0.65% 0.79%

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 1 162 100645 666.83 745 731 149.8
A 1 178 52863 347.93 745 731 149.8
A 1 161 46114 302.89 745 731 149.8
B 4 239 509279 3631.86 751 733 140.0
B 15 204 41892 293.94 751 733 140.0
B 10 252 35508 248.35 751 733 140.0
C 13 61 5410 27.98 730 736 167.1
C 12 4 2465 10.35 730 736 167.1
C 3 202 1813 6.45 730 736 167.1
D 1 52 294144 1747.46 711 691 167.9
D 13 104 222109 1318.5 711 691 167.9
D 10 199 40530 237.23 711 691 167.9

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