ASTROSAT CZTI

Data Quality Report

Orbit 31353

Creation date: 2024-06-27T20:27:09.346115
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_101T01_9000004546_31353cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31353cztM0_level2_quad_clean.evt
Size (bytes)2,140,718,400341,795,520
Size2.0 GB 326.0 MB
Events in quadrant A13,073,4082,212,961
Events in quadrant B20,346,3532,206,022
Events in quadrant C15,099,6092,066,369
Events in quadrant D14,569,0882,086,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544536
B0793945
C0613175
D0597565

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258932340.903719%
B258945482.116320%
C258949663.730594%
D258941930.745346%

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 31873 25898 0 0 0.00% 0.00%
B 31874 25899 44 44 0.14% 0.17%
C 31874 25899 112 112 0.35% 0.43%
D 31874 25899 6 6 0.02% 0.02%

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 54428 76.5 3388 3329 668.0
A 3 137 32789 44.1 3388 3329 668.0
A 0 226 28672 37.94 3388 3329 668.0
B 6 159 6897437 11048.98 3311 3234 624.0
B 0 190 187906 295.96 3311 3234 624.0
B 15 33 180431 283.98 3311 3234 624.0
C 3 233 1186818 1638.62 3148 3174 722.3
C 0 10 658529 907.26 3148 3174 722.3
C 14 238 641205 883.28 3148 3174 722.3
D 8 195 2158365 2863.54 3234 3162 752.6
D 2 250 107165 138.19 3234 3162 752.6
D 2 234 97066 124.77 3234 3162 752.6

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