ASTROSAT CZTI

Data Quality Report

Orbit 23492

Creation date: 2024-06-27T18:55:09.700587
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/AS1A07_100T02_9000003476_23492cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23492cztM0_level2_quad_clean.evt
Size (bytes)476,830,080105,416,640
Size454.7 MB 100.5 MB
Events in quadrant A2,992,160707,459
Events in quadrant B3,517,600722,206
Events in quadrant C3,185,931701,613
Events in quadrant D4,352,967657,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121941
B0142501
C0129021
D0164991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5778160.276912%
B5778591.021115%
C5778811.401869%
D57793796.558228%

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 7158 5779 0 0 0.00% 0.00%
B 7158 5779 26 26 0.36% 0.45%
C 7158 5779 6 6 0.08% 0.10%
D 7159 5780 348 348 4.86% 6.02%

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 13 254 9834 59.42 775 761 152.7
A 0 226 6816 39.66 775 761 152.7
A 3 137 5823 33.15 775 761 152.7
B 0 229 190863 1352.08 772 755 140.6
B 0 189 114529 809.18 772 755 140.6
B 5 172 88735 625.73 772 755 140.6
C 14 238 123207 698.9 764 771 175.2
C 8 208 29543 164.24 764 771 175.2
C 7 247 22581 124.5 764 771 175.2
D 1 52 1391650 7728.62 752 734 180.0
D 12 233 41190 224.79 752 734 180.0
D 7 38 27783 150.3 752 734 180.0

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