ASTROSAT CZTI

Data Quality Report

Orbit 23985

Creation date: 2024-06-27T19:00:50.104669
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_165T01_9000003558_23985cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23985cztM0_level2_quad_clean.evt
Size (bytes)583,689,600138,153,600
Size556.6 MB 131.8 MB
Events in quadrant A3,255,447994,873
Events in quadrant B3,371,1731,004,290
Events in quadrant C3,335,499951,886
Events in quadrant D7,292,979798,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135101
B0138731
C0137201
D0259891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234620.994546%
B6234721.154957%
C62341211.940969%
D6235154324.747394%

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 7554 6235 0 0 0.00% 0.00%
B 7554 6235 7 7 0.09% 0.11%
C 7554 6235 7 7 0.09% 0.11%
D 7555 6236 1037 1037 13.73% 16.63%

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 11296 62.72 844 830 166.9
A 0 226 7548 40.26 844 830 166.9
A 3 137 6351 33.09 844 830 166.9
B 0 197 51820 338.27 833 818 150.8
B 0 190 27500 176.97 833 818 150.8
B 12 111 16833 106.22 833 818 150.8
C 14 238 132977 738.67 794 802 178.9
C 0 10 83107 459.97 794 802 178.9
C 0 239 16567 88.1 794 802 178.9
D 12 218 3053978 17817.06 714 694 171.4
D 12 233 577092 3363.5 714 694 171.4
D 1 52 304128 1770.65 714 694 171.4

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