ASTROSAT CZTI

Data Quality Report

Orbit 24838

Creation date: 2024-06-27T19:10:27.789930
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/AS1A08_003T03_9000003632_24838cztM0_level2.evt modeM0/AS1A08_003T03_9000003632_24838cztM0_level2_quad_clean.evt
Size (bytes)493,646,40074,036,160
Size470.8 MB 70.6 MB
Events in quadrant A3,375,954469,113
Events in quadrant B3,545,380479,908
Events in quadrant C3,423,636441,616
Events in quadrant D4,184,618418,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135852
B0142182
C0136392
D0162982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202290.467591%
B6201620.999839%
C6201771.241735%
D62011822.935010%

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 7542 6203 0 0 0.00% 0.00%
B 7541 6202 7 7 0.09% 0.11%
C 7541 6202 0 0 0.00% 0.00%
D 7541 6202 121 121 1.60% 1.95%

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 8700 45.3 876 862 173.0
A 0 226 7615 39.03 876 862 173.0
A 3 137 7428 37.95 876 862 173.0
B 0 189 56703 342.26 874 858 163.2
B 10 251 32942 196.63 874 858 163.2
B 4 80 27717 164.61 874 858 163.2
C 14 238 134823 705.68 822 829 189.9
C 7 247 82154 428.3 822 829 189.9
C 13 61 5752 25.93 822 829 189.9
D 1 52 635303 3209.65 816 793 197.7
D 5 222 372061 1878.05 816 793 197.7
D 8 195 59405 296.48 816 793 197.7

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