ASTROSAT CZTI

Data Quality Report

Orbit 21970

Creation date: 2024-06-27T18:34:41.307507
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/AS1A07_130T01_9000003246_21970cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21970cztM0_level2_quad_clean.evt
Size (bytes)503,835,84089,064,000
Size480.5 MB 84.9 MB
Events in quadrant A3,618,671565,752
Events in quadrant B3,729,671572,179
Events in quadrant C3,578,724545,925
Events in quadrant D3,868,979538,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150763
B0154182
C0147722
D0158282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68161061.555164%
B68161452.127347%
C68161281.877934%
D68171462.141705%

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 9146 6816 0 0 0.00% 0.00%
B 9146 6816 19 19 0.21% 0.28%
C 9146 6816 0 0 0.00% 0.00%
D 9147 6817 64 64 0.70% 0.94%

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 13 254 11837 59.1 936 919 184.7
A 0 226 8124 39.0 936 919 184.7
A 3 137 7645 36.41 936 919 184.7
B 3 64 65981 377.35 920 900 172.5
B 0 230 26275 147.13 920 900 172.5
B 0 197 25731 143.97 920 900 172.5
C 14 238 140605 687.75 881 891 203.1
C 13 61 6278 26.52 881 891 203.1
C 0 10 2782 9.31 881 891 203.1
D 2 136 202117 915.66 900 875 219.8
D 13 174 151955 687.42 900 875 219.8
D 7 238 51296 229.42 900 875 219.8

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