ASTROSAT CZTI

Data Quality Report

Orbit 11655

Creation date: 2024-06-27T16:16:31.333286
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_037T01_9000001716_11655cztM0_level2.evt modeM0/AS1A04_037T01_9000001716_11655cztM0_level2_quad_clean.evt
Size (bytes)309,358,08036,253,440
Size295.0 MB 34.6 MB
Events in quadrant A3,391,946207,948
Events in quadrant B1,853,319223,115
Events in quadrant C1,612,063218,416
Events in quadrant D2,284,485211,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124061
B076021
C071281
D089851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332663219.001804%
B33262086.253758%
C33261474.419723%
D33262076.223692%

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 4017 3328 243 243 6.05% 7.30%
B 4017 3328 8 8 0.20% 0.24%
C 4017 3328 0 0 0.00% 0.00%
D 4017 3328 26 26 0.65% 0.78%

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 8 5 1574892 18777.35 400 388 83.9
A 1 162 102050 1212.4 400 388 83.9
A 1 178 59680 707.1 400 388 83.9
B 4 239 156577 1845.42 421 409 84.6
B 15 204 24441 283.98 421 409 84.6
B 3 209 16968 195.68 421 409 84.6
C 1 3 4261 39.17 411 412 98.3
C 13 61 2947 25.79 411 412 98.3
C 14 225 2147 17.65 411 412 98.3
D 1 52 273446 2729.17 409 397 100.0
D 8 195 183278 1827.92 409 397 100.0
D 10 157 84792 843.54 409 397 100.0

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