ASTROSAT CZTI

Data Quality Report

Orbit 16557

Creation date: 2024-06-27T17:24:21.831054
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_018T01_9000002442_16557cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16557cztM0_level2_quad_clean.evt
Size (bytes)528,808,32089,009,280
Size504.3 MB 84.9 MB
Events in quadrant A4,698,012555,256
Events in quadrant B3,529,978597,888
Events in quadrant C3,452,852572,611
Events in quadrant D3,913,742536,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181733
B0144502
C0141722
D0158812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62015078.176101%
B6201901.451379%
C62011272.048057%
D62011782.870505%

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 7472 6203 420 420 5.62% 6.77%
B 7472 6203 23 23 0.31% 0.37%
C 7472 6203 36 36 0.48% 0.58%
D 7472 6203 120 120 1.61% 1.93%

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 15 174 1705670 11031.64 769 757 154.5
A 15 223 18277 113.36 769 757 154.5
A 9 143 10840 65.24 769 757 154.5
B 7 220 155382 1023.37 799 782 151.1
B 15 35 92026 603.99 799 782 151.1
B 5 172 37144 240.7 799 782 151.1
C 3 233 343994 1933.5 758 764 177.5
C 14 238 118601 663.8 758 764 177.5
C 7 247 30862 169.55 758 764 177.5
D 5 222 497908 2713.88 750 729 183.2
D 7 38 481679 2625.3 750 729 183.2
D 1 52 66270 357.76 750 729 183.2

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