ASTROSAT CZTI

Data Quality Report

Orbit 11492

Creation date: 2024-06-27T16:13:43.993432
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/AS1A04_107T01_9000001684_11492cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11492cztM0_level2_quad_clean.evt
Size (bytes)621,967,68095,682,240
Size593.2 MB 91.2 MB
Events in quadrant A6,901,487580,819
Events in quadrant B4,095,178645,026
Events in quadrant C2,862,480639,751
Events in quadrant D4,568,412609,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246632
B0160891
C0123911
D0173751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6046130621.601059%
B60463024.995038%
C6046310.512736%
D60462524.168045%

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 7347 6047 893 893 12.15% 14.77%
B 7347 6048 168 168 2.29% 2.78%
C 7347 6048 0 0 0.00% 0.00%
D 7347 6048 193 193 2.63% 3.19%

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 8 5 4122008 29382.0 696 685 140.3
A 9 143 30830 214.91 696 685 140.3
A 1 162 16347 111.66 696 685 140.3
B 4 239 957424 6890.78 744 728 138.8
B 11 51 171541 1230.31 744 728 138.8
B 0 214 29217 205.2 744 728 138.8
C 13 61 5274 26.95 733 739 168.3
C 14 67 3390 15.75 733 739 168.3
C 12 4 3048 13.72 733 739 168.3
D 1 52 1197019 6951.88 732 717 172.1
D 8 195 158099 914.57 732 717 172.1
D 13 152 124180 717.46 732 717 172.1

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