ASTROSAT CZTI

Data Quality Report

Orbit 30406

Creation date: 2024-06-27T20:14:50.054558
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/AS1C05_019T04_9000004376_30406cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30406cztM0_level2_quad_clean.evt
Size (bytes)619,735,680109,546,560
Size591.0 MB 104.5 MB
Events in quadrant A3,802,578704,235
Events in quadrant B6,453,866698,629
Events in quadrant C3,953,594682,232
Events in quadrant D4,013,756673,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164182
B0247842
C0166102
D0170992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80471271.578228%
B80471972.448117%
C80471431.777060%
D80471371.702498%

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 9447 8047 0 0 0.00% 0.00%
B 9447 8047 5 5 0.05% 0.06%
C 9447 8047 1 1 0.01% 0.01%
D 9447 8047 42 42 0.44% 0.52%

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 8 192 26727 131.19 975 953 196.5
A 13 254 15327 73.16 975 953 196.5
A 14 239 11682 54.61 975 953 196.5
B 6 159 2214576 11868.76 963 937 186.5
B 0 229 418402 2238.3 963 937 186.5
B 15 33 25235 130.27 963 937 186.5
C 14 238 154643 708.17 931 937 217.0
C 3 233 121329 554.68 931 937 217.0
C 15 208 24376 107.99 931 937 217.0
D 8 195 167896 690.18 930 910 241.9
D 13 249 126142 517.6 930 910 241.9
D 2 250 101758 416.82 930 910 241.9

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