ASTROSAT CZTI

Data Quality Report

Orbit 03475

Creation date: 2024-06-27T14:29:53.196055
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/AS1G05_245T01_9000000460_03475cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03475cztM0_level2_quad_clean.evt
Size (bytes)100,200,96021,729,600
Size95.6 MB 20.7 MB
Events in quadrant A1,077,683133,077
Events in quadrant B668,688142,476
Events in quadrant C633,857144,578
Events in quadrant D564,676141,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040962
B027921
C027381
D026061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127514111.058824%
B127520.156863%
C127530.235294%
D127510.078431%

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 1275 1275 79 79 6.20% 6.20%
B 1275 1275 0 0 0.00% 0.00%
C 1275 1275 2 2 0.16% 0.16%
D 1275 1275 0 0 0.00% 0.00%

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 0 118 331913 10719.6 143 140 31.0
A 0 50 144418 4661.63 143 140 31.0
A 0 226 31676 1018.93 143 140 31.0
B 15 204 60314 1960.66 150 147 30.7
B 14 167 16406 529.83 150 147 30.7
B 4 81 5667 179.88 150 147 30.7
C 7 220 40232 1094.62 150 150 36.6
C 12 4 3383 88.29 150 150 36.6
C 13 61 1210 28.95 150 150 36.6
D 14 226 1707 41.86 149 144 37.3
D 10 172 1409 33.88 149 144 37.3
D 3 254 1209 28.52 149 144 37.3

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
Veto Counter