ASTROSAT CZTI

Data Quality Report

Orbit 20170705_G07_027T01_9000001358_level2

Creation date: 2025-11-14T23:43:06.763385
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/AS1G07_027T01_9000001358cztM0_level2.fits modeM0/AS1G07_027T01_9000001358cztM0_level2_quad_clean.evt
Size (bytes)140,834,880170,472,960
Size134.3 MB 162.6 MB
Events in quadrant A868,2921,104,772
Events in quadrant B836,0061,097,114
Events in quadrant C858,8121,041,715
Events in quadrant D753,792970,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332270
B0292280
C0285760
D0298860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137243392.470125%
B137332301.674798%
C137321821.325371%
D137302301.675164%

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 16155 13737 0 0 0.00% 0.00%
B 16155 13740 0 0 0.00% 0.00%
C 16155 13740 0 0 0.00% 0.00%
D 16155 13740 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 29 842 10.79 226 213 58.3
A 7 110 756 9.32 226 213 58.3
A 9 19 666 7.77 226 213 58.3
B 2 9 755 11.83 220 211 46.0
B 5 128 578 7.98 220 211 46.0
B 12 226 562 7.63 220 211 46.0
C 1 80 709 8.27 226 213 60.0
C 1 81 707 8.23 226 213 60.0
C 3 158 583 6.17 226 213 60.0
D 1 19 556 6.21 214 196 58.0
D 6 231 547 6.05 214 196 58.0
D 6 67 546 6.04 214 196 58.0

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