ASTROSAT CZTI

Data Quality Report

Orbit 20424

Creation date: 2024-06-27T18:15:14.832356
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_188T01_9000003018_20424cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20424cztM0_level2_quad_clean.evt
Size (bytes)606,288,96067,072,320
Size578.2 MB 64.0 MB
Events in quadrant A3,466,863421,980
Events in quadrant B3,348,724431,721
Events in quadrant C3,308,152411,722
Events in quadrant D7,824,862338,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138712
B0134062
C0132342
D0273552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6105600.982801%
B6105661.081081%
C6105821.343161%
D6105137922.588043%

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 7505 6106 7 7 0.09% 0.11%
B 7505 6106 0 0 0.00% 0.00%
C 7505 6106 0 0 0.00% 0.00%
D 7505 6106 1379 1379 18.37% 22.58%

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 5 16 205469 1238.43 844 831 165.2
A 0 226 7383 39.65 844 831 165.2
A 3 137 6252 32.81 844 831 165.2
B 10 245 17940 109.44 843 827 156.4
B 12 111 17918 109.3 843 827 156.4
B 11 111 16084 97.57 843 827 156.4
C 14 238 133152 712.81 812 818 185.7
C 3 233 10028 49.61 812 818 185.7
C 13 61 5862 27.17 812 818 185.7
D 2 16 4586536 25098.39 768 748 182.7
D 13 153 194782 1061.96 768 748 182.7
D 1 52 147312 802.16 768 748 182.7

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