ASTROSAT CZTI

Data Quality Report

Orbit 28004

Creation date: 2024-06-27T19:46:56.550909
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/AS1A10_021T08_9000004042_28004cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_28004cztM0_level2_quad_clean.evt
Size (bytes)1,026,495,360194,042,880
Size978.9 MB 185.1 MB
Events in quadrant A6,657,2041,251,596
Events in quadrant B6,980,2291,277,884
Events in quadrant C6,971,3071,217,346
Events in quadrant D9,543,5061,175,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285890
B0295980
C0296000
D0379980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13776860.624274%
B137601841.337209%
C137682271.648751%
D137476424.670110%

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 17599 13916 6 6 0.03% 0.04%
B 17599 13893 35 35 0.20% 0.25%
C 17599 13907 8 8 0.05% 0.06%
D 17599 13884 527 527 2.99% 3.80%

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 13 98430 283.53 1695 1660 341.3
A 13 254 20698 55.78 1695 1660 341.3
A 8 192 19350 51.83 1695 1660 341.3
B 10 245 307495 951.04 1682 1638 321.6
B 12 111 40499 120.83 1682 1638 321.6
B 0 190 38908 115.89 1682 1638 321.6
C 14 238 260714 683.75 1622 1631 378.9
C 3 233 235646 617.59 1622 1631 378.9
C 2 16 124385 323.96 1622 1631 378.9
D 8 195 1710462 4449.92 1610 1570 384.0
D 1 52 1062829 2763.5 1610 1570 384.0
D 7 80 315549 817.59 1610 1570 384.0

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