ASTROSAT CZTI

Data Quality Report

Orbit 20210208_A10_123T02_9000004160_level2

Creation date: 2021-02-12T11:12:36.746845
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_123T02_9000004160cztM0_level2_bc.evt modeM0/AS1A10_123T02_9000004160cztM0_level2_quad_clean.evt
Size (bytes)4,668,984,0001,558,503,360
Size4.3 GB 1.5 GB
Events in quadrant A23,291,39310,190,449
Events in quadrant B24,110,20910,512,366
Events in quadrant C30,371,6099,934,172
Events in quadrant D56,252,2459,141,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022080
B022080
C022080
D022080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02267280
B02285970
C02527730
D03487030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10838711561.066549%
B10838714501.337799%
C10838724982.304704%
D1083871109710.238313%

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 128829 108391 0 0 0.00% 0.00%
B 128829 108386 2 2 0.00% 0.00%
C 128828 108387 4 4 0.00% 0.00%
D 128829 108389 1788 1788 1.39% 1.65%

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 13 254 170308 128.61 6000 5903 1278.3
A 1 113 68848 49.24 6000 5903 1278.3
A 13 6 39915 26.61 6000 5903 1278.3
B 0 229 198459 170.32 6121 5985 1130.1
B 10 245 161487 137.6 6121 5985 1130.1
B 0 190 152945 130.04 6121 5985 1130.1
C 3 233 7174927 5187.14 5847 5829 1382.1
C 2 16 495128 354.03 5847 5829 1382.1
C 2 114 207221 145.72 5847 5829 1382.1
D 1 52 16722901 13033.64 5651 5479 1282.6
D 7 80 12303526 9588.1 5651 5479 1282.6
D 8 195 5033674 3920.2 5651 5479 1282.6

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