ASTROSAT CZTI

Data Quality Report

Orbit 32074

Creation date: 2024-06-27T20:35:36.487973
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/AS1A10_109T01_9000004678_32074cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32074cztM0_level2_quad_clean.evt
Size (bytes)831,695,04082,932,480
Size793.2 MB 79.1 MB
Events in quadrant A3,228,759573,245
Events in quadrant B10,714,684474,312
Events in quadrant C4,729,054500,869
Events in quadrant D6,077,844508,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136322
B0363982
C0182682
D0225743

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488130.200370%
B6488250038.532676%
C648880712.438348%
D64872123.268075%

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 7678 6489 0 0 0.00% 0.00%
B 7678 6488 1938 1938 25.24% 29.87%
C 7678 6489 283 283 3.69% 4.36%
D 7677 6488 155 155 2.02% 2.39%

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 12142 68.78 834 819 164.6
A 13 6 9732 54.14 834 819 164.6
A 3 137 8048 43.91 834 819 164.6
B 10 245 5923090 41972.13 757 740 141.1
B 6 159 1655651 11728.47 757 740 141.1
B 0 190 100818 709.26 757 740 141.1
C 0 10 897453 5087.21 759 766 176.3
C 3 233 237069 1340.63 759 766 176.3
C 14 238 231836 1310.94 759 766 176.3
D 8 195 2087480 11094.51 791 773 188.1
D 12 227 504979 2680.74 791 773 188.1
D 12 218 353377 1874.71 791 773 188.1

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