ASTROSAT CZTI

Data Quality Report

Orbit 53909

Creation date: 2025-09-15T13:45:35.637887
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/AS1A14_057T04_9000006508_53909cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53909cztM0_level2_quad_clean.evt
Size (bytes)740,208,96099,535,680
Size705.9 MB 94.9 MB
Events in quadrant A3,855,953745,416
Events in quadrant B4,385,933778,589
Events in quadrant C4,954,916688,750
Events in quadrant D13,613,080272,009

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169433
B0182803
C0200683
D0457093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75972633.461893%
B75963484.581359%
C75963815.015798%
D7597452559.562985%

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 9022 7599 47 47 0.52% 0.62%
B 9021 7598 49 49 0.54% 0.64%
C 9021 7599 183 183 2.03% 2.41%
D 9021 7596 4040 4040 44.78% 53.19%

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 15 174 211578 954.91 887 866 220.7
A 8 246 33840 149.43 887 866 220.7
A 10 253 33628 148.47 887 866 220.7
B 5 250 314524 1666.36 870 838 188.2
B 4 171 219567 1161.93 870 838 188.2
B 5 172 177119 936.44 870 838 188.2
C 15 224 713141 3083.09 844 840 231.0
C 13 3 303138 1308.45 844 840 231.0
C 9 38 268481 1158.45 844 840 231.0
D 8 176 10893724 87460.35 431 412 124.6
D 3 12 664748 5333.83 431 412 124.6
D 10 181 178295 1428.19 431 412 124.6

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