ASTROSAT CZTI

Data Quality Report

Orbit 12978

Creation date: 2024-06-27T16:34:40.443086
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/AS1T02_004T01_9000001910_12978cztM0_level2.evt modeM0/AS1T02_004T01_9000001910_12978cztM0_level2_quad_clean.evt
Size (bytes)584,017,920101,810,880
Size557.0 MB 97.1 MB
Events in quadrant A4,041,140656,144
Events in quadrant B6,004,097640,448
Events in quadrant C3,362,985662,723
Events in quadrant D3,796,600628,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166323
B0225312
C0146772
D0160952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70991602.253839%
B709984411.888998%
C7099560.788843%
D7099851.197352%

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 8830 7102 76 76 0.86% 1.07%
B 8830 7102 472 472 5.35% 6.65%
C 8830 7102 10 10 0.11% 0.14%
D 8830 7102 23 23 0.26% 0.32%

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 12 189 178657 1030.08 853 835 172.6
A 15 223 174475 1005.85 853 835 172.6
A 9 143 120350 692.32 853 835 172.6
B 0 85 1732355 10980.53 825 804 157.7
B 4 239 695807 4407.32 825 804 157.7
B 3 64 244829 1547.47 825 804 157.7
C 14 234 66014 332.34 840 846 196.1
C 0 207 16757 81.14 840 846 196.1
C 13 61 6117 26.88 840 846 196.1
D 1 52 463614 2304.69 829 805 200.8
D 8 195 158422 784.9 829 805 200.8
D 2 234 35336 171.96 829 805 200.8

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