ASTROSAT CZTI

Data Quality Report

Orbit 21300

Creation date: 2024-06-27T18:26:05.734997
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_140T01_9000003142_21300cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21300cztM0_level2_quad_clean.evt
Size (bytes)1,325,600,640230,063,040
Size1.2 GB 219.4 MB
Events in quadrant A9,441,6121,428,155
Events in quadrant B9,593,6431,446,565
Events in quadrant C9,476,5621,402,136
Events in quadrant D10,330,0871,362,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404964
B0408015
C0404984
D0437454

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192872321.202883%
B192862961.534792%
C192863081.597013%
D192863191.654050%

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 21222 19287 15 15 0.07% 0.08%
B 21221 19286 32 32 0.15% 0.17%
C 21221 19286 3 3 0.01% 0.02%
D 21221 19289 153 153 0.72% 0.79%

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 15 236 239944 506.0 2333 2282 469.7
A 5 16 83737 173.42 2333 2282 469.7
A 9 143 64451 132.36 2333 2282 469.7
B 0 230 99098 215.73 2331 2269 448.8
B 0 189 92541 201.12 2331 2269 448.8
B 10 249 87742 190.43 2331 2269 448.8
C 3 233 405940 769.71 2232 2244 524.5
C 14 238 345171 653.84 2232 2244 524.5
C 10 91 15930 26.09 2232 2244 524.5
D 1 52 784452 1434.56 2251 2185 545.3
D 12 235 259193 471.31 2251 2185 545.3
D 13 174 250078 454.6 2251 2185 545.3

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