ASTROSAT CZTI

Data Quality Report

Orbit 16231

Creation date: 2024-06-27T17:19:42.208396
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/AS1T02_112T01_9000002390_16231cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16231cztM0_level2_quad_clean.evt
Size (bytes)507,585,600101,424,960
Size484.1 MB 96.7 MB
Events in quadrant A3,491,509650,823
Events in quadrant B3,812,605654,647
Events in quadrant C3,839,276637,502
Events in quadrant D3,741,159628,390

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150632
B0160561
C0160641
D0161171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7183280.389809%
B7183630.877071%
C71831101.531394%
D7183670.932758%

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 7524 7185 14 14 0.19% 0.19%
B 7524 7185 14 14 0.19% 0.19%
C 7524 7185 20 20 0.27% 0.28%
D 7524 7185 61 61 0.81% 0.85%

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 15 174 117147 661.93 857 840 175.7
A 8 247 42923 239.5 857 840 175.7
A 0 253 12433 65.98 857 840 175.7
B 7 220 165986 1017.09 857 838 162.4
B 0 219 70989 432.04 857 838 162.4
B 3 209 56329 341.75 857 838 162.4
C 3 233 338569 1767.99 815 821 191.0
C 0 207 165680 862.98 815 821 191.0
C 14 238 126881 659.88 815 821 191.0
D 12 233 259597 1278.74 828 806 202.4
D 1 52 177753 874.33 828 806 202.4
D 10 70 64340 313.93 828 806 202.4

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