ASTROSAT CZTI

Data Quality Report

Orbit 37999

Creation date: 2024-06-27T21:47:08.605528
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/AS1A11_082T01_9000005356_37999cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37999cztM0_level2_quad_clean.evt
Size (bytes)338,728,32052,128,000
Size323.0 MB 49.7 MB
Events in quadrant A2,881,548310,212
Events in quadrant B2,768,167318,921
Events in quadrant C2,659,818317,200
Events in quadrant D3,844,693285,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114043
B0110982
C0106082
D0145222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4938160.324018%
B4938190.384771%
C493880.162009%
D49382875.812070%

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 7060 4939 3 3 0.04% 0.06%
B 7060 4939 10 10 0.14% 0.20%
C 7060 4939 4 4 0.06% 0.08%
D 7060 4939 224 224 3.17% 4.54%

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 10 83 363880 2925.74 622 611 124.2
A 15 222 79700 636.98 622 611 124.2
A 12 189 15046 116.26 622 611 124.2
B 4 171 96593 833.14 618 602 115.2
B 0 213 65860 566.4 618 602 115.2
B 0 186 60615 520.87 618 602 115.2
C 15 214 215367 1535.26 612 617 139.9
C 1 23 22575 156.98 612 617 139.9
C 14 254 16352 112.49 612 617 139.9
D 1 52 1191953 8204.7 600 585 145.2
D 13 249 137970 946.14 600 585 145.2
D 7 223 54323 370.08 600 585 145.2

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