ASTROSAT CZTI

Data Quality Report

Orbit 05662

Creation date: 2024-06-27T14:57:46.120203
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/AS1A02_077T01_9000000732_05662cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05662cztM0_level2_quad_clean.evt
Size (bytes)544,682,88068,434,560
Size519.5 MB 65.3 MB
Events in quadrant A2,960,398439,853
Events in quadrant B6,218,921340,191
Events in quadrant C3,365,579432,704
Events in quadrant D3,524,405419,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131612
B0226141
C0143691
D0148711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6291681.080909%
B6291128020.346527%
C62911101.748530%
D6291871.382928%

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 6891 6292 4 4 0.06% 0.06%
B 6891 6292 1157 1157 16.79% 18.39%
C 6891 6292 57 57 0.83% 0.91%
D 6891 6292 56 56 0.81% 0.89%

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 50 64562 420.64 739 723 151.8
A 14 250 19758 125.42 739 723 151.8
A 13 6 16233 102.2 739 723 151.8
B 10 245 2828950 22416.23 646 630 126.2
B 5 172 446065 3530.35 646 630 126.2
B 15 204 272011 2150.86 646 630 126.2
C 1 16 275984 1657.73 708 710 166.1
C 5 250 232845 1397.94 708 710 166.1
C 10 34 49363 292.99 708 710 166.1
D 12 233 312749 1770.85 712 688 176.2
D 2 152 158428 895.12 712 688 176.2
D 4 95 120477 679.76 712 688 176.2

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