ASTROSAT CZTI

Data Quality Report

Orbit 32179

Creation date: 2024-06-27T20:37:18.131756
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/AS1A09_131T01_9000004690_32179cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32179cztM0_level2_quad_clean.evt
Size (bytes)567,912,960117,472,320
Size541.6 MB 112.0 MB
Events in quadrant A2,958,455802,983
Events in quadrant B4,898,880820,515
Events in quadrant C3,222,228789,022
Events in quadrant D5,718,644731,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01255
B01242
C01264
D01266

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012802291
B019038401
C013490310
D021846538

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5931430.725004%
B59341893.185035%
C59311672.815714%
D591560510.228233%

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 7758 5951 0 0 0.00% 0.00%
B 7758 5958 38 38 0.49% 0.64%
C 7758 5952 15 15 0.19% 0.25%
D 7758 5937 366 366 4.72% 6.16%

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 13 6 14675 92.61 761 750 150.4
A 13 254 11394 70.79 761 750 150.4
A 3 137 7151 42.57 761 750 150.4
B 6 159 1664567 11801.88 759 740 141.0
B 5 172 126852 894.54 759 740 141.0
B 0 190 75820 532.56 759 740 141.0
C 14 238 157129 934.65 729 734 167.3
C 0 10 139797 831.07 729 734 167.3
C 14 254 45415 267.02 729 734 167.3
D 8 195 1581324 9611.13 701 683 164.5
D 2 250 1294853 7869.24 701 683 164.5
D 12 218 126137 762.83 701 683 164.5

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