ASTROSAT CZTI

Data Quality Report

Orbit 06749

Creation date: 2024-06-27T15:11:14.425372
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/AS1G06_168T10_9000000932_06749cztM0_level2.evt modeM0/AS1G06_168T10_9000000932_06749cztM0_level2_quad_clean.evt
Size (bytes)642,055,680112,642,560
Size612.3 MB 107.4 MB
Events in quadrant A4,537,405705,349
Events in quadrant B4,306,510723,707
Events in quadrant C4,100,187712,643
Events in quadrant D5,905,304660,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197302
B0188001
C0184951
D0234071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87733273.727345%
B87732683.054827%
C87731051.196854%
D87736427.317907%

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 9213 8774 39 39 0.42% 0.44%
B 9213 8774 5 5 0.05% 0.06%
C 9213 8774 0 0 0.00% 0.00%
D 9213 8774 436 436 4.73% 4.97%

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 4 2 270400 1225.44 1064 1041 219.8
A 13 248 68954 308.97 1064 1041 219.8
A 15 234 35457 156.58 1064 1041 219.8
B 4 81 59273 275.07 1081 1054 211.7
B 5 143 25690 116.4 1081 1054 211.7
B 12 111 22259 100.19 1081 1054 211.7
C 9 247 13498 50.83 1040 1045 245.0
C 9 16 8411 30.06 1040 1045 245.0
C 13 61 8118 28.87 1040 1045 245.0
D 14 34 753609 3020.71 1004 972 249.2
D 2 33 588263 2357.1 1004 972 249.2
D 8 195 580046 2324.12 1004 972 249.2

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