ASTROSAT CZTI

Data Quality Report

Orbit 31202

Creation date: 2024-06-27T20:24:55.419760
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_103T02_9000004514_31202cztM0_level2.evt modeM0/AS1A10_103T02_9000004514_31202cztM0_level2_quad_clean.evt
Size (bytes)1,656,953,280253,958,400
Size1.5 GB 242.2 MB
Events in quadrant A8,428,7181,678,959
Events in quadrant B16,921,8751,549,357
Events in quadrant C8,875,5231,616,668
Events in quadrant D14,714,3051,576,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372353
B0642833
C0378483
D0569333

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18429710.385262%
B18429185610.071084%
C184292691.459656%
D184293021.638722%

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 20394 18432 0 0 0.00% 0.00%
B 20394 18432 1040 1040 5.10% 5.64%
C 20394 18432 1 1 0.00% 0.01%
D 20394 18432 104 104 0.51% 0.56%

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 32136 68.92 2184 2131 435.4
A 3 137 22752 47.36 2184 2131 435.4
A 0 226 18182 36.87 2184 2131 435.4
B 6 159 4908299 12408.47 2068 2014 395.4
B 4 80 3679382 9300.42 2068 2014 395.4
B 0 190 98594 244.26 2068 2014 395.4
C 14 238 386034 777.74 2104 2113 493.6
C 4 175 96058 190.31 2104 2113 493.6
C 10 22 76636 150.97 2104 2113 493.6
D 8 195 6157507 11820.56 2095 2047 520.7
D 2 250 243371 463.42 2095 2047 520.7
D 12 79 191302 363.43 2095 2047 520.7

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