ASTROSAT CZTI

Data Quality Report

Orbit 01171

Creation date: 2024-06-27T14:08:36.700741
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/AS1P01_997T02_9000000218_01171cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01171cztM0_level2_quad_clean.evt
Size (bytes)1,275,716,16088,646,400
Size1.2 GB 84.5 MB
Events in quadrant A6,806,940609,399
Events in quadrant B7,654,531613,294
Events in quadrant C7,493,674581,829
Events in quadrant D16,298,950473,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243562
B0268521
C0263871
D0529041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791150.259023%
B5791220.379900%
C5791841.450527%
D5791296651.217406%

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 7020 5790 170 170 2.42% 2.94%
B 7020 5790 306 306 4.36% 5.28%
C 7020 5790 460 460 6.55% 7.94%
D 7021 5792 5567 5567 79.29% 96.12%

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 12 243 16642 35.38 1765 1778 420.1
A 4 32 10155 19.94 1765 1778 420.1
A 12 251 6935 12.28 1765 1778 420.1
B 2 32 553646 1271.54 1835 1845 434.0
B 6 53 42659 94.05 1835 1845 434.0
B 15 22 22960 48.66 1835 1845 434.0
C 9 83 858606 1920.05 1618 1672 446.3
C 15 241 272107 605.94 1618 1672 446.3
C 3 111 17548 35.57 1618 1672 446.3
D 1 239 10604760 23782.36 1456 1506 445.8
D 2 16 123846 274.4 1456 1506 445.8
D 10 85 45220 98.05 1456 1506 445.8

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