ASTROSAT CZTI

Data Quality Report

Orbit 20699

Creation date: 2024-06-27T18:18:32.920962
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/AS1A05_165T07_9000003062_20699cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20699cztM0_level2_quad_clean.evt
Size (bytes)453,481,92097,004,160
Size432.5 MB 92.5 MB
Events in quadrant A3,085,664661,004
Events in quadrant B3,395,240640,483
Events in quadrant C2,992,823611,053
Events in quadrant D3,856,313610,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127401
B0139571
C0125531
D0153481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5940951.599327%
B59411612.709981%
C59411192.003030%
D59411833.080290%

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 7240 5941 3 3 0.04% 0.05%
B 7241 5942 29 29 0.40% 0.49%
C 7241 5942 0 0 0.00% 0.00%
D 7241 5942 50 50 0.69% 0.84%

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 9 143 39364 242.36 793 779 159.2
A 0 226 7052 39.4 793 779 159.2
A 12 194 5717 31.02 793 779 159.2
B 7 220 301465 2089.01 768 751 144.0
B 0 190 26481 178.74 768 751 144.0
B 0 197 18472 123.1 768 751 144.0
C 14 238 117500 693.75 731 734 168.3
C 7 247 14522 81.92 731 734 168.3
C 8 208 5418 27.83 731 734 168.3
D 7 238 439250 2413.53 755 735 181.7
D 5 222 210112 1152.38 755 735 181.7
D 1 52 101405 554.07 755 735 181.7

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