ASTROSAT CZTI

Data Quality Report

Orbit 20181207_T03_059T01_9000002554_level2

Creation date: 2025-11-26T04:47:04.285400
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/AS1T03_059T01_9000002554cztM0_level2.fits modeM0/AS1T03_059T01_9000002554cztM0_level2_quad_clean.evt
Size (bytes)1,246,043,5201,168,545,600
Size1.2 GB 1.1 GB
Events in quadrant A7,631,6526,975,128
Events in quadrant B7,511,1787,123,853
Events in quadrant C7,512,2106,652,535
Events in quadrant D6,089,8885,655,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026700
B026700
C026700
D026700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03172270
B02722250
C02732310
D04273440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13108054214.135642%
B13110716541.261565%
C13110720071.530811%
D1311071634912.469967%

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 158171 131034 0 0 0.00% 0.00%
B 158171 131098 0 0 0.00% 0.00%
C 158171 131104 0 0 0.00% 0.00%
D 158171 131011 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 6335 9.08 1985 1857 493.1
A 7 110 6211 8.83 1985 1857 493.1
A 9 19 5693 7.78 1985 1857 493.1
B 2 9 6039 10.71 1979 1887 387.6
B 2 8 5121 8.34 1979 1887 387.6
B 3 17 4994 8.02 1979 1887 387.6
C 1 81 5560 7.27 1981 1846 511.0
C 1 80 5496 7.14 1981 1846 511.0
C 12 241 5357 6.87 1981 1846 511.0
D 3 14 4599 6.54 1739 1579 461.5
D 6 231 4407 6.13 1739 1579 461.5
D 6 67 4326 5.95 1739 1579 461.5

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