ASTROSAT CZTI

Data Quality Report

Orbit 00147

Creation date: 2024-06-27T13:57:00.775691
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_140T01_9000000004_00147cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00147cztM0_level2_quad_clean.evt
Size (bytes)578,430,72038,390,400
Size551.6 MB 36.6 MB
Events in quadrant A4,284,837229,316
Events in quadrant B4,384,050233,994
Events in quadrant C3,899,599228,129
Events in quadrant D4,709,801216,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0806
B0819
C0817
D0806

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166221330
B0170901558
C0154341299
D0179891421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3593140.389647%
B358050.139665%
C358620.055772%
D35921103.062361%

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 7372 3626 98 98 1.33% 2.70%
B 7372 3607 97 97 1.32% 2.69%
C 7372 3617 27 27 0.37% 0.75%
D 7372 3619 287 287 3.89% 7.93%

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 15 233 43170 241.27 1067 1043 174.6
A 0 86 27789 153.18 1067 1043 174.6
A 13 146 20383 110.76 1067 1043 174.6
B 10 199 98179 403.51 1071 1074 240.6
B 8 236 44618 180.94 1071 1074 240.6
B 5 216 43525 176.4 1071 1074 240.6
C 8 229 22541 78.18 979 1015 275.3
C 10 17 11895 39.52 979 1015 275.3
C 10 21 4070 11.1 979 1015 275.3
D 13 222 131230 527.56 1032 1015 246.8
D 7 53 73768 294.75 1032 1015 246.8
D 12 141 47592 188.7 1032 1015 246.8

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