ASTROSAT CZTI

Data Quality Report

Orbit 30519

Creation date: 2024-06-27T20:16:22.252219
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/AS1C05_019T04_9000004388_30519cztM0_level2.evt modeM0/AS1C05_019T04_9000004388_30519cztM0_level2_quad_clean.evt
Size (bytes)688,219,200134,884,800
Size656.3 MB 128.6 MB
Events in quadrant A3,851,403905,641
Events in quadrant B6,906,396891,761
Events in quadrant C4,363,763872,175
Events in quadrant D5,169,404848,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171212
B0266272
C0184672
D0207732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8154931.140545%
B81555837.148988%
C81554655.702023%
D81553654.475782%

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 8489 8156 1 1 0.01% 0.01%
B 8490 8157 111 111 1.31% 1.36%
C 8490 8157 41 41 0.48% 0.50%
D 8490 8157 173 173 2.04% 2.12%

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 13 254 15795 74.3 988 965 199.6
A 8 192 12861 59.6 988 965 199.6
A 12 96 12517 57.87 988 965 199.6
B 6 159 2357275 12693.39 973 946 185.6
B 0 229 612235 3292.97 973 946 185.6
B 4 171 41167 216.67 973 946 185.6
C 3 233 469834 2092.22 947 947 224.1
C 14 238 156075 692.2 947 947 224.1
C 10 22 23368 100.04 947 947 224.1
D 8 195 602124 2651.53 949 921 226.7
D 12 218 542093 2386.77 949 921 226.7
D 13 249 183534 805.39 949 921 226.7

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