ASTROSAT CZTI

Data Quality Report

Orbit 20180703_T02_056T01_9000002210_level2

Creation date: 2025-11-23T08:30:25.384468
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/AS1T02_056T01_9000002210cztM0_level2.fits modeM0/AS1T02_056T01_9000002210cztM0_level2_quad_clean.evt
Size (bytes)3,156,837,1203,140,012,160
Size2.9 GB 2.9 GB
Events in quadrant A19,661,29419,533,343
Events in quadrant B18,656,78019,119,562
Events in quadrant C19,036,36818,252,300
Events in quadrant D15,686,84815,649,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07280980
B07680470
C06878040
D010579390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05490
B05490
C05490
D05490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067180
B067180
C067180
D067180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32916846941.426020%
B329168100683.058621%
C32916825090.762225%
D3291444135712.565017%

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 384566 329140 0 0 0.00% 0.00%
B 384566 328943 0 0 0.00% 0.00%
C 384566 329164 0 0 0.00% 0.00%
D 384566 328971 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 18927 11.26 5127 4797 1255.2
A 7 110 15771 8.74 5127 4797 1255.2
A 9 19 14707 7.9 5127 4797 1255.2
B 2 9 16142 12.09 4934 4714 945.6
B 5 128 12223 7.94 4934 4714 945.6
B 14 254 12220 7.94 4934 4714 945.6
C 12 241 13353 6.72 5035 4682 1290.7
C 2 191 12821 6.31 5035 4682 1290.7
C 3 126 12735 6.24 5035 4682 1290.7
D 6 231 11525 6.21 4491 4083 1198.0
D 3 14 11403 6.11 4491 4083 1198.0
D 7 5 10774 5.58 4491 4083 1198.0

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