ASTROSAT CZTI

Data Quality Report

Orbit 18493

Creation date: 2024-06-27T17:50:44.583112
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/AS1T03_083T01_9000002742_18493cztM0_level2.evt modeM0/AS1T03_083T01_9000002742_18493cztM0_level2_quad_clean.evt
Size (bytes)1,332,204,480303,600,960
Size1.2 GB 289.5 MB
Events in quadrant A10,282,6772,017,744
Events in quadrant B10,550,4082,029,185
Events in quadrant C9,209,0381,971,058
Events in quadrant D9,083,0291,932,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424714
B0429454
C0388104
D0393224

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180725112.827579%
B180726083.364320%
C180723181.759628%
D180722261.250553%

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 20442 18072 244 244 1.19% 1.35%
B 20442 18072 274 274 1.34% 1.52%
C 20442 18072 15 15 0.07% 0.08%
D 20442 18072 54 54 0.26% 0.30%

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 1419837 3245.67 2171 2128 436.8
A 4 2 311395 708.03 2171 2128 436.8
A 15 174 196099 444.07 2171 2128 436.8
B 10 245 1819423 4452.9 2165 2111 408.1
B 7 220 94765 227.03 2165 2111 408.1
B 12 111 48124 112.74 2165 2111 408.1
C 3 233 655988 1345.35 2093 2108 486.0
C 14 238 323822 661.92 2093 2108 486.0
C 7 247 52181 103.02 2093 2108 486.0
D 1 52 441266 861.13 2121 2062 510.0
D 7 238 379374 739.78 2121 2062 510.0
D 7 38 203745 395.43 2121 2062 510.0

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