ASTROSAT CZTI

Data Quality Report

Orbit 11888

Creation date: 2024-06-27T16:19:46.812947
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/AS1G08_083T04_9000001760_11888cztM0_level2.evt modeM0/AS1G08_083T04_9000001760_11888cztM0_level2_quad_clean.evt
Size (bytes)167,063,04015,287,040
Size159.3 MB 14.6 MB
Events in quadrant A1,285,44572,070
Events in quadrant B1,198,14572,930
Events in quadrant C1,152,14075,272
Events in quadrant D1,261,39972,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052892
B051151
C050481
D052071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23471847.839795%
B23471908.095441%
C23471054.473796%
D23471195.070303%

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 2488 2349 1 1 0.04% 0.04%
B 2488 2349 1 1 0.04% 0.04%
C 2488 2349 0 0 0.00% 0.00%
D 2488 2349 2 2 0.08% 0.09%

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 66512 1047.23 294 286 63.2
A 1 162 30629 479.81 294 286 63.2
A 1 178 15834 245.86 294 286 63.2
B 4 239 17572 286.02 297 288 60.4
B 12 111 6832 108.29 297 288 60.4
B 11 111 5686 89.33 297 288 60.4
C 8 128 3373 43.59 293 293 70.7
C 12 4 3199 41.13 293 293 70.7
C 13 61 2177 26.66 293 293 70.7
D 8 195 119911 1687.99 288 278 70.9
D 9 85 14637 202.6 288 278 70.9
D 13 104 10803 148.51 288 278 70.9

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