ASTROSAT CZTI

Data Quality Report

Orbit 19962

Creation date: 2024-06-27T18:09:26.366456
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/AS1T03_036T01_9000002972_19962cztM0_level2.evt modeM0/AS1T03_036T01_9000002972_19962cztM0_level2_quad_clean.evt
Size (bytes)173,882,88032,682,240
Size165.8 MB 31.2 MB
Events in quadrant A819,498241,079
Events in quadrant B1,014,726236,434
Events in quadrant C1,139,481218,000
Events in quadrant D2,185,983180,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033221
B040461
C045741
D075661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153560.390879%
B1535332.149837%
C1535261.693811%
D153549832.442997%

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 1535 1535 0 0 0.00% 0.00%
B 1535 1535 13 13 0.85% 0.85%
C 1535 1535 1 1 0.07% 0.07%
D 1534 1534 507 507 33.05% 33.05%

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 0 226 1993 40.48 212 209 44.1
A 11 29 1964 39.82 212 209 44.1
A 14 238 1613 31.86 212 209 44.1
B 7 220 129328 3128.87 205 201 41.3
B 0 197 43644 1052.66 205 201 41.3
B 0 190 14918 356.61 205 201 41.3
C 10 222 222137 4844.22 193 194 45.8
C 3 233 128046 2790.55 193 194 45.8
C 14 238 29720 644.45 193 194 45.8
D 7 38 961518 21735.34 174 169 44.2
D 12 218 494941 11186.4 174 169 44.2
D 7 96 17504 391.93 174 169 44.2

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