ASTROSAT CZTI

Data Quality Report

Orbit 25412

Creation date: 2024-06-27T19:17:22.565246
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/AS1A09_047T01_9000003714_25412cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25412cztM0_level2_quad_clean.evt
Size (bytes)496,097,28067,812,480
Size473.1 MB 64.7 MB
Events in quadrant A3,171,674408,270
Events in quadrant B3,224,371412,054
Events in quadrant C3,250,715393,182
Events in quadrant D4,926,714376,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135290
B0136000
C0137270
D0190880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6640330.496988%
B6641500.752899%
C6641640.963710%
D66412243.372986%

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 7520 6640 0 0 0.00% 0.00%
B 7521 6641 1 1 0.01% 0.02%
C 7521 6641 0 0 0.00% 0.00%
D 7521 6641 185 185 2.46% 2.79%

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 6 16 44819 271.95 811 794 161.9
A 13 254 9573 54.23 811 794 161.9
A 3 137 7662 42.43 811 794 161.9
B 3 112 26974 171.12 804 782 153.1
B 0 229 24729 156.46 804 782 153.1
B 12 111 19067 119.46 804 782 153.1
C 14 238 125050 688.16 771 774 180.6
C 7 247 115885 637.41 771 774 180.6
C 13 61 5365 25.42 771 774 180.6
D 8 195 1045047 5584.95 774 750 187.0
D 12 233 467663 2497.07 774 750 187.0
D 7 238 229618 1224.0 774 750 187.0

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