ASTROSAT CZTI

Data Quality Report

Orbit 15637

Creation date: 2024-06-27T17:11:27.505069
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/AS1T02_086T01_9000002316_15637cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15637cztM0_level2_quad_clean.evt
Size (bytes)523,330,560101,180,160
Size499.1 MB 96.5 MB
Events in quadrant A3,288,249653,968
Events in quadrant B3,364,937657,597
Events in quadrant C3,690,829643,357
Events in quadrant D5,023,447614,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146232
B0146581
C0153121
D0197201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7097721.014513%
B7097861.211780%
C70971021.437227%
D70974025.664365%

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 7298 7099 1 1 0.01% 0.01%
B 7298 7099 0 0 0.00% 0.00%
C 7298 7098 0 0 0.00% 0.00%
D 7298 7098 363 363 4.97% 5.11%

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 13 248 23731 132.71 845 826 172.6
A 0 226 7786 40.33 845 826 172.6
A 3 80 7274 37.36 845 826 172.6
B 0 189 24108 143.23 842 820 162.6
B 12 111 18818 110.69 842 820 162.6
B 11 111 15684 91.42 842 820 162.6
C 3 233 421012 2225.46 805 809 188.8
C 14 238 123268 648.56 805 809 188.8
C 13 61 5860 26.75 805 809 188.8
D 1 52 1613904 8114.1 809 784 198.8
D 12 110 254928 1278.36 809 784 198.8
D 2 234 29763 145.77 809 784 198.8

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