ASTROSAT CZTI

Data Quality Report

Orbit 18068

Creation date: 2024-06-27T17:44:37.983027
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/AS1A06_003T04_9000002682_18068cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18068cztM0_level2_quad_clean.evt
Size (bytes)609,592,32099,604,800
Size581.4 MB 95.0 MB
Events in quadrant A4,517,605645,518
Events in quadrant B3,491,432671,587
Events in quadrant C3,501,792636,663
Events in quadrant D6,452,848551,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183672
B0151492
C0151332
D0242692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73376108.314025%
B7337530.722366%
C7336921.254089%
D7336142119.370229%

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 7652 7337 3 3 0.04% 0.04%
B 7652 7338 0 0 0.00% 0.00%
C 7651 7337 0 0 0.00% 0.00%
D 7650 7336 1213 1213 15.86% 16.53%

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 14 111 1154440 6570.22 860 840 175.6
A 15 174 43243 241.5 860 840 175.6
A 4 2 12638 67.19 860 840 175.6
B 12 111 19894 112.33 879 856 169.5
B 0 197 17502 98.22 879 856 169.5
B 11 111 17194 96.4 879 856 169.5
C 14 238 132466 668.99 843 848 196.7
C 3 233 64440 323.23 843 848 196.7
C 9 160 8769 40.26 843 848 196.7
D 7 238 3030772 15820.93 787 764 191.5
D 5 222 253377 1319.0 787 764 191.5
D 11 176 76741 396.7 787 764 191.5

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