ASTROSAT CZTI

Data Quality Report

Orbit 51446

Creation date: 2025-04-02T16:13:22.443694
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/AS1A13_090T01_9000006458_51446cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51446cztM0_level2_quad_clean.evt
Size (bytes)1,320,232,320132,586,560
Size1.2 GB 126.4 MB
Events in quadrant A11,883,429929,281
Events in quadrant B5,878,1581,101,237
Events in quadrant C22,923,958325,135
Events in quadrant D7,330,575892,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430960
B0252850
C0757004
D0297790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11056118010.672938%
B110561671.510492%
C11056801572.494573%
D110564213.807887%

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 11056 11056 1016 1016 9.19% 9.19%
B 11056 11056 104 104 0.94% 0.94%
C 11055 11055 7250 7250 65.58% 65.58%
D 11056 11056 444 444 4.02% 4.02%

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 12 3 3585353 12808.95 1127 1099 279.8
A 15 174 1082195 3863.48 1127 1099 279.8
A 7 64 968896 3458.59 1127 1099 279.8
B 4 206 333813 1343.94 1158 1117 247.6
B 7 252 139974 560.92 1158 1117 247.6
B 0 171 106091 424.05 1158 1117 247.6
C 15 179 11795214 61241.64 697 693 192.6
C 4 12 6427605 33370.97 697 693 192.6
C 10 171 850579 4412.93 697 693 192.6
D 7 60 1400321 4463.06 1124 1083 313.5
D 7 96 271385 862.17 1124 1083 313.5
D 2 153 194850 618.05 1124 1083 313.5

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