ASTROSAT CZTI

Data Quality Report

Orbit 17778

Creation date: 2024-06-27T17:40:47.055407
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/AS1A05_015T01_9000002650_17778cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17778cztM0_level2_quad_clean.evt
Size (bytes)489,643,20091,869,120
Size467.0 MB 87.6 MB
Events in quadrant A3,121,281584,447
Events in quadrant B3,246,835597,688
Events in quadrant C4,152,690560,966
Events in quadrant D3,841,706560,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139811
B0142181
C0169041
D0163271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68651191.733430%
B68651131.646031%
C68663595.228663%
D68661722.505098%

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 7230 6867 0 0 0.00% 0.00%
B 7230 6867 8 8 0.11% 0.12%
C 7231 6868 144 144 1.99% 2.10%
D 7231 6868 76 76 1.05% 1.11%

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 0 226 7124 38.49 810 793 164.5
A 12 194 6196 32.85 810 793 164.5
A 3 137 6123 32.41 810 793 164.5
B 7 220 48504 305.27 806 785 156.3
B 12 111 18599 113.96 806 785 156.3
B 11 111 16127 98.15 806 785 156.3
C 4 254 993283 5556.65 760 764 178.6
C 14 238 117574 653.96 760 764 178.6
C 5 218 48185 265.49 760 764 178.6
D 7 238 768206 4105.08 778 759 187.0
D 10 70 60075 317.28 778 759 187.0
D 2 234 34277 179.29 778 759 187.0

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