ASTROSAT CZTI

Data Quality Report

Orbit 00697

Creation date: 2024-06-27T14:01:42.567065
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/AS1P01_147T02_9000000098_00697cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00697cztM0_level2_quad_clean.evt
Size (bytes)645,212,16037,981,440
Size615.3 MB 36.2 MB
Events in quadrant A4,440,082219,817
Events in quadrant B4,692,925222,926
Events in quadrant C5,528,383214,543
Events in quadrant D4,614,361212,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159980
B0167760
C0191800
D0165980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396450.126135%
B396520.050441%
C396530.075662%
D39653067.717528%

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 3964 3964 37 37 0.93% 0.93%
B 3965 3965 53 53 1.34% 1.34%
C 3965 3965 115 115 2.90% 2.90%
D 3965 3965 308 308 7.77% 7.77%

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 15 171 57526 203.36 1142 1150 277.2
A 11 79 3849 9.74 1142 1150 277.2
A 3 111 3580 8.77 1142 1150 277.2
B 7 221 101775 357.51 1189 1199 281.3
B 0 220 50630 175.71 1189 1199 281.3
B 15 85 16292 53.65 1189 1199 281.3
C 3 127 659260 2209.05 1063 1097 297.9
C 3 31 161079 536.96 1063 1097 297.9
C 3 15 149469 497.99 1063 1097 297.9
D 9 64 881120 2939.0 973 1006 299.5
D 1 4 29735 95.94 973 1006 299.5
D 0 25 22510 71.81 973 1006 299.5

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