ASTROSAT CZTI

Data Quality Report

Orbit 07776

Creation date: 2024-06-27T15:23:51.900728
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_132T01_9000001068_07776cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07776cztM0_level2_quad_clean.evt
Size (bytes)540,696,96090,702,720
Size515.6 MB 86.5 MB
Events in quadrant A3,652,042555,421
Events in quadrant B3,835,212569,893
Events in quadrant C3,628,142566,850
Events in quadrant D4,731,204513,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161074
B0164023
C0161483
D0193963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77762072.662037%
B77762132.739198%
C77761451.864712%
D77764966.378601%

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 8076 7776 0 0 0.00% 0.00%
B 8076 7776 0 0 0.00% 0.00%
C 8076 7776 0 0 0.00% 0.00%
D 8076 7776 238 238 2.95% 3.06%

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 8 15 11158 52.36 944 920 195.5
A 0 226 9136 42.02 944 920 195.5
A 12 194 8427 38.39 944 920 195.5
B 4 81 37889 199.6 951 925 185.2
B 0 214 32858 172.44 951 925 185.2
B 4 239 23338 121.03 951 925 185.2
C 12 4 10860 45.58 926 928 217.9
C 13 61 7098 28.31 926 928 217.9
C 9 243 3341 11.07 926 928 217.9
D 1 52 983051 4351.28 908 878 225.7
D 12 221 92844 407.43 908 878 225.7
D 2 14 69085 302.17 908 878 225.7

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