ASTROSAT CZTI

Data Quality Report

Orbit 31314

Creation date: 2024-06-27T20:26:36.766157
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_053T27_9000004534_31314cztM0_level2.evt modeM0/AS1A10_053T27_9000004534_31314cztM0_level2_quad_clean.evt
Size (bytes)640,442,88079,280,640
Size610.8 MB 75.6 MB
Events in quadrant A3,662,514485,214
Events in quadrant B6,067,639477,540
Events in quadrant C4,735,400456,549
Events in quadrant D4,423,770460,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155490
B0232880
C0189650
D0179710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74911411.882259%
B74902983.978638%
C74903174.232310%
D74901542.056075%

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 7616 7492 0 0 0.00% 0.00%
B 7615 7491 11 11 0.14% 0.15%
C 7615 7491 3 3 0.04% 0.04%
D 7615 7491 11 11 0.14% 0.15%

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 13602 65.84 948 925 192.5
A 3 137 9843 46.32 948 925 192.5
A 0 226 7980 36.64 948 925 192.5
B 6 159 2138056 11830.64 927 901 180.6
B 4 80 184565 1016.71 927 901 180.6
B 0 230 35335 190.62 927 901 180.6
C 3 233 965072 4578.64 892 896 210.6
C 14 238 182107 860.52 892 896 210.6
C 14 254 57354 268.1 892 896 210.6
D 8 195 871445 3949.71 920 894 220.4
D 2 234 36976 163.7 920 894 220.4
D 2 250 35433 156.7 920 894 220.4

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