ASTROSAT CZTI

Data Quality Report

Orbit 35429

Creation date: 2022-04-20T21:24:27.152513
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/AS1A11_097T07_9000005072_35429cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35429cztM0_level2_quad_clean.evt
Size (bytes)1,499,253,120130,020,480
Size1.4 GB 124.0 MB
Events in quadrant A5,013,877916,330
Events in quadrant B22,380,471573,871
Events in quadrant C6,207,592894,458
Events in quadrant D11,082,458807,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219494
B0737943
C0250713
D0400473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10714120.112003%
B10714805875.210006%
C107141911.782714%
D10714183817.155124%

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 14864 10717 0 0 0.00% 0.00%
B 14864 10716 6719 6719 45.20% 62.70%
C 14864 10717 132 132 0.89% 1.23%
D 14864 10716 1406 1406 9.46% 13.12%

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 10 83 218034 866.45 1234 1209 250.2
A 13 254 17237 64.05 1234 1209 250.2
A 3 137 13103 47.53 1234 1209 250.2
B 4 251 7841382 46753.55 860 835 167.7
B 5 31 3214401 19162.65 860 835 167.7
B 5 14 3190566 19020.52 860 835 167.7
C 0 10 557899 2006.94 1194 1199 277.4
C 0 207 516761 1858.63 1194 1199 277.4
C 15 214 431637 1551.76 1194 1199 277.4
D 7 80 5148012 18904.6 1112 1080 272.3
D 2 249 762479 2796.61 1112 1080 272.3
D 13 249 217552 795.1 1112 1080 272.3

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