ASTROSAT CZTI

Data Quality Report

Orbit 20221030_A10_094T24_9000005374_level2

Creation date: 2022-11-04T17:22:30.204794
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/AS1A10_094T24_9000005374cztM0_level2.fits modeM0/AS1A10_094T24_9000005374cztM0_level2_quad_clean.evt
Size (bytes)1,633,924,8002,421,345,600
Size1.5 GB 2.3 GB
Events in quadrant A9,894,27016,409,121
Events in quadrant B9,692,90416,862,946
Events in quadrant C9,914,22416,259,348
Events in quadrant D7,465,63811,316,498

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037440
B037440
C037440
D037440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04175700
B04162860
C03796840
D09808980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07010
B07010
C07010
D07010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17990723601.311789%
B18312721971.199714%
C1831275840.318904%
D1831274937626.962709%

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 253245 179882 0 0 0.00% 0.00%
B 253245 183038 0 0 0.00% 0.00%
C 253245 183114 0 0 0.00% 0.00%
D 253245 182916 0 0 0.00% 0.00%

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 29 8297 9.21 2591 2441 635.9
A 9 19 8138 8.96 2591 2441 635.9
A 7 110 8027 8.78 2591 2441 635.9
B 2 9 8338 11.85 2576 2465 495.6
B 3 80 7679 10.52 2576 2465 495.6
B 5 255 6768 8.68 2576 2465 495.6
C 1 81 8446 9.0 2629 2478 663.3
C 1 80 8019 8.35 2629 2478 663.3
C 3 187 6822 6.55 2629 2478 663.3
D 7 3 5492 6.26 2144 1960 564.3
D 4 160 5470 6.22 2144 1960 564.3
D 10 189 5349 6.01 2144 1960 564.3

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