ASTROSAT CZTI

Data Quality Report

Orbit 20996

Creation date: 2024-06-27T18:22:09.279088
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/AS1A05_072T04_9000003094_20996cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_20996cztM0_level2_quad_clean.evt
Size (bytes)1,283,572,800242,688,960
Size1.2 GB 231.4 MB
Events in quadrant A8,418,9191,575,829
Events in quadrant B9,221,9611,565,917
Events in quadrant C8,654,6421,504,786
Events in quadrant D11,339,2381,441,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374023
B0393123
C0377063
D0464023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183151480.808081%
B183162211.206595%
C183162581.408604%
D183168364.564315%

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 20090 18318 0 0 0.00% 0.00%
B 20091 18319 33 33 0.16% 0.18%
C 20091 18319 9 9 0.04% 0.05%
D 20091 18319 654 654 3.26% 3.57%

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 0 226 18655 37.53 2190 2140 440.0
A 3 137 18026 36.1 2190 2140 440.0
A 12 194 15619 30.63 2190 2140 440.0
B 7 220 183566 443.14 2173 2118 409.5
B 3 64 149282 359.41 2173 2118 409.5
B 4 216 116398 279.1 2173 2118 409.5
C 14 238 325990 657.66 2098 2110 492.5
C 7 247 98998 196.74 2098 2110 492.5
C 3 233 23396 43.22 2098 2110 492.5
D 7 238 1199839 2362.37 2100 2041 507.0
D 1 52 633720 1245.83 2100 2041 507.0
D 1 239 621482 1221.7 2100 2041 507.0

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