ASTROSAT CZTI

Data Quality Report

Orbit 14841

Creation date: 2024-06-27T17:00:16.272614
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/AS1C03_005T02_9000002192_14841cztM0_level2.evt modeM0/AS1C03_005T02_9000002192_14841cztM0_level2_quad_clean.evt
Size (bytes)530,824,320110,039,040
Size506.2 MB 104.9 MB
Events in quadrant A3,480,577718,000
Events in quadrant B3,842,886704,019
Events in quadrant C3,994,918702,333
Events in quadrant D4,251,540689,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153612
B0163301
C0164371
D0179061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7451530.711314%
B74511401.878942%
C74511101.476312%
D74511221.637364%

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 7682 7453 0 0 0.00% 0.00%
B 7682 7452 37 37 0.48% 0.50%
C 7682 7453 60 60 0.78% 0.81%
D 7682 7453 78 78 1.02% 1.05%

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 12 189 30010 163.04 881 861 178.8
A 15 239 27253 147.62 881 861 178.8
A 3 1 22140 119.02 881 861 178.8
B 3 64 231064 1405.82 867 845 163.8
B 0 189 58137 349.85 867 845 163.8
B 0 219 46792 280.57 867 845 163.8
C 3 233 385134 1992.82 842 845 192.8
C 0 207 290457 1501.85 842 845 192.8
C 8 128 11219 53.8 842 845 192.8
D 7 254 721853 3185.69 839 822 226.3
D 7 38 124022 544.33 839 822 226.3
D 13 172 55347 240.9 839 822 226.3

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