ASTROSAT CZTI

Data Quality Report

Orbit 16252

Creation date: 2024-06-27T17:19:58.173882
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/AS1T02_112T01_9000002390_16252cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16252cztM0_level2_quad_clean.evt
Size (bytes)492,586,56064,552,320
Size469.8 MB 61.6 MB
Events in quadrant A4,281,603389,533
Events in quadrant B4,037,725371,949
Events in quadrant C3,190,056391,661
Events in quadrant D3,000,474381,166

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164522
B0157751
C0130211
D0127081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60144166.917193%
B60143736.202195%
C6014831.380113%
D6014480.798138%

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 7200 6016 299 299 4.15% 4.97%
B 7200 6015 176 176 2.44% 2.93%
C 7200 6016 0 0 0.00% 0.00%
D 7200 6016 8 8 0.11% 0.13%

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 15 174 1353672 8977.52 756 743 150.7
A 9 143 13308 83.38 756 743 150.7
A 3 1 6797 40.17 756 743 150.7
B 3 64 713267 5045.84 759 743 141.2
B 7 220 74960 525.58 759 743 141.2
B 4 216 60398 422.46 759 743 141.2
C 3 233 137960 801.71 747 754 171.1
C 14 238 117765 683.71 747 754 171.1
C 7 247 13864 76.6 747 754 171.1
D 1 52 66790 360.47 757 736 183.2
D 10 70 25700 136.23 757 736 183.2
D 2 234 23027 121.65 757 736 183.2

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