ASTROSAT CZTI

Data Quality Report

Orbit 17528

Creation date: 2024-06-27T17:37:37.800367
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/AS1A05_140T01_9000002596_17528cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17528cztM0_level2_quad_clean.evt
Size (bytes)484,096,32086,880,960
Size461.7 MB 82.9 MB
Events in quadrant A3,311,692558,549
Events in quadrant B3,350,693568,368
Events in quadrant C3,520,846544,711
Events in quadrant D4,054,317523,751

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135481
B0136211
C0143211
D0159251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242821.313682%
B6243881.409579%
C62431141.826045%
D62431973.155534%

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 7547 6243 0 0 0.00% 0.00%
B 7548 6243 1 1 0.01% 0.02%
C 7548 6243 0 0 0.00% 0.00%
D 7548 6243 104 104 1.38% 1.67%

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 7743 40.81 861 847 169.0
A 12 194 6272 32.1 861 847 169.0
A 3 137 5811 29.37 861 847 169.0
B 12 111 17995 108.26 852 832 158.5
B 11 111 15842 94.68 852 832 158.5
B 0 230 14175 84.16 852 832 158.5
C 14 238 130974 679.74 836 842 191.4
C 3 233 106212 550.4 836 842 191.4
C 5 218 25340 127.96 836 842 191.4
D 5 222 693954 3463.01 837 816 200.2
D 13 189 102224 506.65 837 816 200.2
D 7 38 78354 387.39 837 816 200.2

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