ASTROSAT CZTI

Data Quality Report

Orbit 20160124_T01_034T01_9000000290_level2

Creation date: 2025-10-26T00:09:06.210364
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_034T01_9000000290cztM0_level2.fits modeM0/AS1T01_034T01_9000000290cztM0_level2_quad_clean.evt
Size (bytes)583,574,400871,041,600
Size556.5 MB 830.7 MB
Events in quadrant A3,364,9525,631,813
Events in quadrant B3,349,8985,683,496
Events in quadrant C3,303,1825,350,669
Events in quadrant D2,844,3484,907,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139850770659368139848430125102
B1139850770659368139848430125102
C1139850770659368139848430125102
D1139850770659368139848430125102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014040
B014040
C014040
D014040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03121950
B03084630
C02945910
D03243730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701673410.485983%
B701552550.363481%
C701502920.416251%
D7014313601.938896%

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 80457 70180 0 0 0.00% 0.00%
B 80457 70169 0 0 0.00% 0.00%
C 80457 70168 0 0 0.00% 0.00%
D 80457 70145 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 14 188 3107 11.47 871 816 199.7
A 0 29 3010 10.99 871 816 199.7
A 7 110 2958 10.73 871 816 199.7
B 2 9 2764 12.13 885 843 158.3
B 5 128 2230 8.76 885 843 158.3
B 14 254 2171 8.39 885 843 158.3
C 12 241 2292 7.07 871 808 209.9
C 2 127 2248 6.86 871 808 209.9
C 1 81 2176 6.52 871 808 209.9
D 1 19 2091 7.11 811 744 189.4
D 6 231 2078 7.04 811 744 189.4
D 6 44 2059 6.94 811 744 189.4

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