ASTROSAT CZTI

Data Quality Report

Orbit 30131

Creation date: 2024-06-27T20:11:17.502884
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/AS1A10_097T01_9000004334_30131cztM0_level2.evt modeM0/AS1A10_097T01_9000004334_30131cztM0_level2_quad_clean.evt
Size (bytes)2,019,827,520256,567,680
Size1.9 GB 244.7 MB
Events in quadrant A9,687,3351,709,879
Events in quadrant B13,958,4541,703,129
Events in quadrant C27,006,6841,443,068
Events in quadrant D9,289,8941,652,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409043
B0552433
C0931047
D0394473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182863802.078093%
B182873001.640510%
C18286636034.780707%
D182861430.782019%

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 20341 18289 174 174 0.86% 0.95%
B 20342 18290 13 13 0.06% 0.07%
C 20341 18288 4219 4219 20.74% 23.07%
D 20341 18289 41 41 0.20% 0.22%

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 13 1285321 2966.46 2170 2122 432.6
A 8 192 34226 74.22 2170 2122 432.6
A 13 254 31442 67.78 2170 2122 432.6
B 6 159 5329456 13056.89 2153 2095 408.0
B 0 190 69097 164.22 2153 2095 408.0
B 12 111 51495 121.08 2153 2095 408.0
C 3 233 19140967 43055.8 1902 1907 444.5
C 14 238 339655 759.81 1902 1907 444.5
C 14 254 56960 123.85 1902 1907 444.5
D 8 195 543233 1039.53 2109 2060 520.6
D 13 104 202719 385.44 2109 2060 520.6
D 12 227 171534 325.54 2109 2060 520.6

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