ASTROSAT CZTI

Data Quality Report

Orbit 45946

Creation date: 2024-06-27T23:18:01.711260
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/AS1A13_071T06_9000006146_45946cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45946cztM0_level2_quad_clean.evt
Size (bytes)128,545,92018,878,400
Size122.6 MB 18.0 MB
Events in quadrant A1,196,283130,145
Events in quadrant B1,877,40185,507
Events in quadrant C710,953136,336
Events in quadrant D871,247122,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058051450
B089002468
C03811841
D046651148

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384
B0397
C0395
D0399

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031
B032
C031
D042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12751088.470588%
B123056045.528455%
C1320523.939394%
D1295544.169884%

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 2057 1363 0 0 0.00% 0.00%
B 2000 1313 251 251 12.55% 19.12%
C 2123 1416 4 4 0.19% 0.28%
D 2097 1391 1 1 0.05% 0.07%

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 10 83 551324 14990.4 165 161 36.8
A 13 6 2581 65.82 165 161 36.8
A 3 137 2115 53.14 165 161 36.8
B 3 112 1277558 41902.26 139 134 30.5
B 0 199 13060 424.0 139 134 30.5
B 5 172 12883 418.19 139 134 30.5
C 14 254 39912 931.39 168 168 42.7
C 5 250 8999 206.95 168 168 42.7
C 3 233 3974 89.19 168 168 42.7
D 11 241 151030 3408.01 167 161 44.3
D 12 233 68303 1539.27 167 161 44.3
D 13 249 4830 105.47 167 161 44.3

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