ASTROSAT CZTI

Data Quality Report

Orbit 23993

Creation date: 2024-06-27T19:00:55.132579
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/AS1A07_165T01_9000003558_23993cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23993cztM0_level2_quad_clean.evt
Size (bytes)1,105,902,720204,615,360
Size1.0 GB 195.1 MB
Events in quadrant A5,219,6351,441,402
Events in quadrant B5,843,2681,459,514
Events in quadrant C5,415,7981,397,950
Events in quadrant D16,243,2341,107,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231652
B0249282
C0234142
D0561092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11405510.447172%
B114051571.376589%
C114051181.034634%
D11405405835.580886%

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 11925 11406 1 1 0.01% 0.01%
B 11925 11406 39 39 0.33% 0.34%
C 11925 11406 3 3 0.03% 0.03%
D 11925 11406 2992 2992 25.09% 26.23%

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 6 16 43092 154.22 1342 1313 270.9
A 13 254 18891 64.88 1342 1313 270.9
A 3 137 11582 37.91 1342 1313 270.9
B 0 197 514282 2049.29 1334 1300 250.3
B 12 111 30273 115.74 1334 1300 250.3
B 11 111 26430 100.39 1334 1300 250.3
C 14 238 204877 684.56 1284 1292 297.4
C 0 239 122721 408.31 1284 1292 297.4
C 0 10 78962 261.17 1284 1292 297.4
D 12 218 10131333 38505.81 1095 1060 263.1
D 7 223 473344 1795.18 1095 1060 263.1
D 12 250 420004 1592.43 1095 1060 263.1

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