ASTROSAT CZTI

Data Quality Report

Orbit 19951

Creation date: 2024-06-27T18:09:08.554257
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_160T01_9000002970_19951cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19951cztM0_level2_quad_clean.evt
Size (bytes)1,523,419,200248,077,440
Size1.4 GB 236.6 MB
Events in quadrant A15,342,6991,500,219
Events in quadrant B9,681,9941,615,314
Events in quadrant C10,059,4661,544,238
Events in quadrant D9,758,6651,533,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0584484
B0413834
C0420244
D0424374

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19167236112.318047%
B191683361.752922%
C191683401.773790%
D191682571.340776%

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 20397 19168 1908 1908 9.35% 9.95%
B 20398 19168 44 44 0.22% 0.23%
C 20398 19170 12 12 0.06% 0.06%
D 20398 19170 113 113 0.55% 0.59%

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 14 238 6827742 15416.65 2211 2165 442.7
A 0 226 18717 37.39 2211 2165 442.7
A 3 137 18010 35.79 2211 2165 442.7
B 7 220 264332 584.44 2344 2285 448.4
B 0 197 59753 128.17 2344 2285 448.4
B 12 111 54582 116.64 2344 2285 448.4
C 9 221 634874 1193.26 2258 2278 530.1
C 14 238 351519 658.77 2258 2278 530.1
C 3 233 174835 325.49 2258 2278 530.1
D 1 52 763269 1362.67 2294 2227 558.5
D 2 234 107637 188.74 2294 2227 558.5
D 2 184 107376 188.27 2294 2227 558.5

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