ASTROSAT CZTI

Data Quality Report

Orbit 09657

Creation date: 2024-06-27T15:48:59.153115
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/AS1A03_077T01_9000001372_09657cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09657cztM0_level2_quad_clean.evt
Size (bytes)569,119,680128,525,760
Size542.8 MB 122.6 MB
Events in quadrant A4,037,002837,841
Events in quadrant B4,203,557844,431
Events in quadrant C3,849,072837,450
Events in quadrant D4,572,147786,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181
B0184
C0180
D0181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022856
B022856
C022856
D022748

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232695873
B0238676164
C0231585918
D0271197873

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8492981.154027%
B84491071.266422%
C8461790.933696%
D82661942.346963%

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 13008 9470 0 0 0.00% 0.00%
B 13008 9443 3 3 0.02% 0.03%
C 13008 9423 2 2 0.02% 0.02%
D 13008 9279 71 71 0.55% 0.77%

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 0 103 47285 223.9 1023 1002 206.7
A 1 162 30850 144.39 1023 1002 206.7
A 0 226 12583 56.02 1023 1002 206.7
B 0 214 130072 669.95 1015 992 192.7
B 15 85 37975 191.95 1015 992 192.7
B 0 219 33436 168.39 1015 992 192.7
C 5 128 10076 40.29 982 987 225.6
C 13 61 7357 28.24 982 987 225.6
C 14 234 4695 16.44 982 987 225.6
D 1 52 525008 2255.08 956 934 232.4
D 13 104 139887 597.91 956 934 232.4
D 8 195 109354 466.53 956 934 232.4

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