ASTROSAT CZTI

Data Quality Report

Orbit 20220730_A11_079T01_9000005254_level2

Creation date: 2026-01-03T21:48:01.848575
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/AS1A11_079T01_9000005254cztM0_level2.fits modeM0/AS1A11_079T01_9000005254cztM0_level2_quad_clean.evt
Size (bytes)1,219,749,1201,127,502,720
Size1.1 GB 1.1 GB
Events in quadrant A7,569,3946,918,716
Events in quadrant B6,741,1125,772,044
Events in quadrant C7,410,6946,675,281
Events in quadrant D6,272,6585,842,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026660
B026660
C026640
D026620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04950
B04950
C04950
D04950

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02732330
B04580640
C02903030
D03556870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1304092590.198606%
B1304051772813.594571%
C1304489270.710628%
D13040873905.666830%

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 179055 130533 0 0 0.00% 0.00%
B 179055 130509 0 0 0.00% 0.00%
C 179055 130567 0 0 0.00% 0.00%
D 179055 130274 0 0 0.00% 0.00%

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 29 6144 8.81 1977 1854 487.0
A 7 110 6122 8.76 1977 1854 487.0
A 9 19 6038 8.59 1977 1854 487.0
B 2 9 5885 11.89 1785 1703 351.8
B 3 80 5223 10.0 1785 1703 351.8
B 2 8 4879 9.03 1785 1703 351.8
C 1 81 6384 9.05 1962 1841 501.8
C 1 80 6108 8.5 1962 1841 501.8
C 3 203 5781 7.85 1962 1841 501.8
D 10 189 4688 6.34 1799 1645 479.6
D 7 3 4554 6.06 1799 1645 479.6
D 3 14 4481 5.91 1799 1645 479.6

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