ASTROSAT CZTI

Data Quality Report

Orbit 20602

Creation date: 2024-06-27T18:17:17.880516
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_9000003046_20602cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20602cztM0_level2_quad_clean.evt
Size (bytes)587,289,600105,361,920
Size560.1 MB 100.5 MB
Events in quadrant A3,580,085674,067
Events in quadrant B4,240,399684,006
Events in quadrant C3,752,378661,724
Events in quadrant D5,698,413642,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158332
B0178522
C0161762
D0223272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7593761.000922%
B75932363.108126%
C75931632.146714%
D75934966.532332%

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 7898 7594 0 0 0.00% 0.00%
B 7898 7594 56 56 0.71% 0.74%
C 7898 7594 0 0 0.00% 0.00%
D 7898 7594 285 285 3.61% 3.75%

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 0 226 7921 37.28 928 909 188.1
A 12 194 7432 34.68 928 909 188.1
A 3 137 7422 34.63 928 909 188.1
B 4 171 234792 1308.72 928 905 178.7
B 7 220 177867 990.2 928 905 178.7
B 0 197 62416 344.19 928 905 178.7
C 14 238 138533 649.68 895 901 211.8
C 8 208 114274 535.17 895 901 211.8
C 3 233 8038 33.69 895 901 211.8
D 1 20 1628869 7525.07 889 864 216.3
D 5 222 446943 2061.89 889 864 216.3
D 13 153 55271 251.48 889 864 216.3

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