ASTROSAT CZTI

Data Quality Report

Orbit 25477

Creation date: 2024-06-27T19:18:07.168665
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/AS1C05_012T07_9000003718_25477cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25477cztM0_level2_quad_clean.evt
Size (bytes)98,242,56029,177,280
Size93.7 MB 27.8 MB
Events in quadrant A718,925198,779
Events in quadrant B713,221201,667
Events in quadrant C751,581191,864
Events in quadrant D695,572188,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028790
B028730
C030270
D028630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1372453.279883%
B1372503.644315%
C1372554.008746%
D1372392.842566%

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 2642 1373 0 0 0.00% 0.00%
B 2642 1373 0 0 0.00% 0.00%
C 2642 1373 1 1 0.04% 0.07%
D 2642 1373 0 0 0.00% 0.00%

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 3 137 1717 39.93 186 182 38.4
A 13 254 1676 38.86 186 182 38.4
A 0 226 1614 37.25 186 182 38.4
B 12 111 4335 116.28 182 178 35.8
B 11 111 3767 100.39 182 178 35.8
B 14 111 3485 92.5 182 178 35.8
C 7 87 31980 777.27 172 174 40.9
C 14 238 28691 696.9 172 174 40.9
C 2 16 14879 359.36 172 174 40.9
D 8 195 12851 289.3 177 172 43.8
D 1 52 7174 159.77 177 172 43.8
D 2 234 4660 102.4 177 172 43.8

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