ASTROSAT CZTI

Data Quality Report

Orbit 35986

Creation date: 2022-05-28T15:08:21.438440
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_050T19_9000005156_35986cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35986cztM0_level2_quad_clean.evt
Size (bytes)529,617,60034,853,760
Size505.1 MB 33.2 MB
Events in quadrant A1,210,912343,173
Events in quadrant B6,318,81480,159
Events in quadrant C5,444,123147,033
Events in quadrant D2,903,264309,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05223200
B0215961230
C018773962
D010605274

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0522
B0522
C0500
D0522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201
B0200
C0212
D0222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243040.164609%
B23702370100.000000%
C2382191980.562552%
D242241317.052023%

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 6942 2456 0 0 0.00% 0.00%
B 6941 2378 2331 2331 33.58% 98.02%
C 6941 2405 1796 1796 25.88% 74.68%
D 6943 2454 225 225 3.24% 9.17%

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 53424 865.77 299 293 61.4
A 13 254 3986 60.18 299 293 61.4
A 3 137 2912 42.68 299 293 61.4
B 5 31 2362606 131173.75 84 82 18.0
B 5 15 2192516 121729.89 84 82 18.0
B 5 14 1160113 64408.07 84 82 18.0
C 9 187 4793607 139363.44 141 142 34.4
C 15 214 51598 1496.01 141 142 34.4
C 0 207 39430 1142.24 141 142 34.4
D 1 52 1534942 22153.17 278 270 69.3
D 8 195 111566 1606.57 278 270 69.3
D 13 249 52390 752.36 278 270 69.3

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