ASTROSAT CZTI

Data Quality Report

Orbit 20160327_T01_113T01_9000000400_level2

Creation date: 2025-10-28T21:09:49.407716
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_113T01_9000000400cztM0_level2.fits modeM0/AS1T01_113T01_9000000400cztM0_level2_quad_clean.evt
Size (bytes)913,656,9601,033,044,480
Size871.3 MB 985.2 MB
Events in quadrant A5,472,6106,418,828
Events in quadrant B5,306,6046,412,687
Events in quadrant C5,421,9326,079,430
Events in quadrant D4,596,1645,505,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01590
B01590
C01590
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02057220
B02192300
C02057430
D02212930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020380
B020380
C020380
D020380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10026610991.096084%
B10026618631.858058%
C1002667290.727066%
D10026614701.466100%

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 116030 100259 0 0 0.00% 0.00%
B 116030 100263 0 0 0.00% 0.00%
C 116030 100263 0 0 0.00% 0.00%
D 116030 100262 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 5194 10.32 1420 1317 375.5
A 7 110 4712 9.04 1420 1317 375.5
A 9 19 4156 7.56 1420 1317 375.5
B 2 9 4579 11.77 1397 1328 276.3
B 12 226 4001 9.67 1397 1328 276.3
B 5 128 3758 8.79 1397 1328 276.3
C 12 241 3894 6.63 1431 1313 389.5
C 7 111 3889 6.61 1431 1313 389.5
C 2 127 3801 6.39 1431 1313 389.5
D 3 14 3516 6.35 1309 1183 367.3
D 11 82 3376 5.97 1309 1183 367.3
D 1 19 3372 5.96 1309 1183 367.3

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