ASTROSAT CZTI

Data Quality Report

Orbit 24316

Creation date: 2024-06-27T19:04:40.780423
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_145T01_9000003594_24316cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24316cztM0_level2_quad_clean.evt
Size (bytes)580,740,480113,008,320
Size553.8 MB 107.8 MB
Events in quadrant A3,383,130748,023
Events in quadrant B3,646,109780,888
Events in quadrant C5,598,305737,342
Events in quadrant D4,515,388698,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142222
B0150702
C0216152
D0177312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6567640.974570%
B65671261.918684%
C65683595.465895%
D65683725.663825%

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 9022 6567 0 0 0.00% 0.00%
B 9022 6567 23 23 0.25% 0.35%
C 9023 6568 49 49 0.54% 0.75%
D 9023 6568 245 245 2.72% 3.73%

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 10 255 34720 196.0 868 851 172.8
A 13 254 10324 54.82 868 851 172.8
A 3 137 7539 38.7 868 851 172.8
B 0 219 208346 1263.87 874 853 164.2
B 12 111 19493 113.54 874 853 164.2
B 11 111 17116 99.06 874 853 164.2
C 7 247 1348614 6929.77 843 852 194.5
C 2 16 825138 4238.22 843 852 194.5
C 14 238 134326 686.28 843 852 194.5
D 1 52 664869 3311.56 831 809 200.5
D 12 218 529176 2634.88 831 809 200.5
D 12 233 66570 327.94 831 809 200.5

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