ASTROSAT CZTI

Data Quality Report

Orbit 15905

Creation date: 2024-06-27T17:14:56.984026
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_143T01_9000002344_15905cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15905cztM0_level2_quad_clean.evt
Size (bytes)466,787,52080,277,120
Size445.2 MB 76.6 MB
Events in quadrant A3,961,963502,022
Events in quadrant B3,414,274518,619
Events in quadrant C3,257,942492,184
Events in quadrant D3,080,895484,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158373
B0142132
C0136652
D0133332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62121482.382486%
B6212791.271732%
C6212911.464907%
D6212390.627817%

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 7463 6213 70 70 0.94% 1.13%
B 7463 6214 13 13 0.17% 0.21%
C 7463 6214 0 0 0.00% 0.00%
D 7463 6214 4 4 0.05% 0.06%

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 15 239 805079 4915.5 818 803 163.6
A 15 157 12333 70.47 818 803 163.6
A 0 226 7354 40.04 818 803 163.6
B 4 173 35645 224.97 827 809 154.8
B 0 219 29716 186.68 827 809 154.8
B 4 216 27365 171.5 827 809 154.8
C 14 238 122468 665.34 791 797 182.9
C 3 233 31285 166.72 791 797 182.9
C 10 22 20023 105.13 791 797 182.9
D 2 234 31383 155.61 803 779 196.7
D 13 172 14968 72.15 803 779 196.7
D 10 70 11655 55.3 803 779 196.7

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