ASTROSAT CZTI

Data Quality Report

Orbit 20170706_G07_052T01_9000001362_level2

Creation date: 2025-11-15T00:15:51.370907
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_052T01_9000001362cztM0_level2.fits modeM0/AS1G07_052T01_9000001362cztM0_level2_quad_clean.evt
Size (bytes)146,381,760149,281,920
Size139.6 MB 142.4 MB
Events in quadrant A891,700924,404
Events in quadrant B866,466930,319
Events in quadrant C885,744870,236
Events in quadrant D747,660754,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356750
B0314910
C0311490
D0452170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150924132.736549%
B150992621.735214%
C151001881.245033%
D15072151310.038482%

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 17824 15107 0 0 0.00% 0.00%
B 17825 15111 0 0 0.00% 0.00%
C 17825 15109 0 0 0.00% 0.00%
D 17824 15106 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 29 817 9.76 232 217 61.5
A 7 110 742 8.54 232 217 61.5
A 0 28 636 6.81 232 217 61.5
B 2 9 751 11.0 228 216 48.7
B 12 226 593 7.75 228 216 48.7
B 14 254 588 7.65 228 216 48.7
C 1 81 647 6.83 233 217 62.9
C 12 241 614 6.31 233 217 62.9
C 1 65 609 6.23 233 217 62.9
D 6 231 539 5.95 213 194 58.0
D 7 3 538 5.93 213 194 58.0
D 7 5 520 5.62 213 194 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