ASTROSAT CZTI

Data Quality Report

Orbit 22928

Creation date: 2024-06-27T18:47:39.600630
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/AS1T03_170T01_9000003388_22928cztM0_level2.evt modeM0/AS1T03_170T01_9000003388_22928cztM0_level2_quad_clean.evt
Size (bytes)525,625,92078,431,040
Size501.3 MB 74.8 MB
Events in quadrant A3,362,910487,183
Events in quadrant B3,469,547501,213
Events in quadrant C3,493,403483,061
Events in quadrant D5,160,604458,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136012
B0139922
C0141202
D0194552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6373861.349443%
B63731071.678958%
C63731392.181076%
D63733114.879962%

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 7663 6374 0 0 0.00% 0.00%
B 7663 6374 0 0 0.00% 0.00%
C 7663 6374 0 0 0.00% 0.00%
D 7663 6374 206 206 2.69% 3.23%

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 10466 56.25 872 857 170.8
A 0 226 7539 39.12 872 857 170.8
A 3 137 6719 34.32 872 857 170.8
B 12 111 18311 108.19 876 857 161.3
B 0 190 17132 100.88 876 857 161.3
B 11 111 15997 93.84 876 857 161.3
C 14 238 137865 702.85 854 862 194.9
C 7 247 20705 101.8 854 862 194.9
C 13 61 6047 26.6 854 862 194.9
D 1 52 1695013 8322.91 852 832 203.6
D 13 153 194299 950.43 852 832 203.6
D 12 227 26415 125.68 852 832 203.6

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