ASTROSAT CZTI

Data Quality Report

Orbit 33794

Creation date: 2024-06-27T20:52:44.153170
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/AS1A11_086T01_9000004820_33794cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33794cztM0_level2_quad_clean.evt
Size (bytes)2,943,743,040287,827,200
Size2.7 GB 274.5 MB
Events in quadrant A20,041,7971,784,099
Events in quadrant B17,136,9371,819,213
Events in quadrant C13,844,8031,860,591
Events in quadrant D36,447,6371,527,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0765287
B0672025
C0566465
D01255235

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25052264310.550056%
B2505214275.696152%
C250521740.694555%
D25052783731.282932%

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 32011 25058 1883 1883 5.88% 7.51%
B 32011 25058 1089 1089 3.40% 4.35%
C 32011 25058 143 143 0.45% 0.57%
D 32011 25058 7659 7659 23.93% 30.57%

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 15 237 7604504 13738.08 2784 2728 553.3
A 15 169 1571383 2834.9 2784 2728 553.3
A 13 6 54673 93.88 2784 2728 553.3
B 5 172 2295570 4226.48 2862 2780 542.5
B 0 197 1881596 3463.37 2862 2780 542.5
B 5 255 817821 1502.43 2862 2780 542.5
C 15 214 1114162 1715.88 2846 2870 647.7
C 14 254 490131 752.35 2846 2870 647.7
C 3 233 442681 679.08 2846 2870 647.7
D 12 235 16695474 28084.39 2447 2378 594.4
D 8 195 4969385 8356.47 2447 2378 594.4
D 10 118 1698948 2854.3 2447 2378 594.4

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