ASTROSAT CZTI

Data Quality Report

Orbit 20170807_A03_033T01_9000001438_level2

Creation date: 2025-11-15T19:48:07.925481
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/AS1A03_033T01_9000001438cztM0_level2.fits modeM0/AS1A03_033T01_9000001438cztM0_level2_quad_clean.evt
Size (bytes)209,275,200188,953,920
Size199.6 MB 180.2 MB
Events in quadrant A1,254,2141,086,742
Events in quadrant B1,215,0581,090,827
Events in quadrant C1,240,8181,027,180
Events in quadrant D1,049,988940,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480390
B0479710
C0465230
D0569770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0340
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04700
C04690
D04640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229442751.198570%
B229573161.376486%
C229781710.744190%
D226585422.392091%

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 28201 24114 0 0 0.00% 0.00%
B 28201 24114 0 0 0.00% 0.00%
C 28201 24136 0 0 0.00% 0.00%
D 28199 23912 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 1153 10.21 325 304 83.1
A 7 110 1029 8.72 325 304 83.1
A 9 19 934 7.58 325 304 83.1
B 2 9 1009 10.75 319 303 65.7
B 14 254 836 8.11 319 303 65.7
B 5 232 832 8.05 319 303 65.7
C 12 241 932 7.14 327 303 88.1
C 1 81 883 6.58 327 303 88.1
C 1 80 875 6.49 327 303 88.1
D 3 14 802 6.45 299 271 82.3
D 6 231 778 6.16 299 271 82.3
D 10 189 745 5.76 299 271 82.3

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