ASTROSAT CZTI

Data Quality Report

Orbit 02753

Creation date: 2025-06-30T12:04:18.914749
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/AS1T01_112T01_9000000406_02753cztM0_level2.fits modeM0/AS1T01_112T01_9000000406_02753cztM0_level2_quad_clean.evt
Size (bytes)399,435,840118,350,720
Size380.9 MB 112.9 MB
Events in quadrant A3,700,841778,897
Events in quadrant B3,313,926819,788
Events in quadrant C3,821,696768,586
Events in quadrant D3,395,957721,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159632
B0146901
C0162601
D0153841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71003024.253521%
B71001482.084507%
C71002964.169014%
D71001181.661972%

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 7625 7101 156 156 2.05% 2.20%
B 7625 7101 0 0 0.00% 0.00%
C 7625 7101 203 203 2.66% 2.86%
D 7625 7101 28 28 0.37% 0.39%

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 0 128 507026 2944.34 830 809 171.9
A 0 226 8878 46.93 830 809 171.9
A 12 194 8790 46.42 830 809 171.9
B 15 85 23081 133.99 854 834 166.0
B 12 111 12483 70.16 854 834 166.0
B 11 111 10488 58.14 854 834 166.0
C 2 53 626907 3306.68 799 806 189.3
C 14 67 35510 183.29 799 806 189.3
C 10 65 9880 47.92 799 806 189.3
D 13 169 95943 494.45 800 782 192.5
D 7 237 71512 367.51 800 782 192.5
D 13 53 67545 346.9 800 782 192.5

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