ASTROSAT CZTI

Data Quality Report

Orbit 20277

Creation date: 2024-06-27T18:14:03.274950
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/AS1A06_009T02_9000003006_20277cztM0_level2.evt modeM0/AS1A06_009T02_9000003006_20277cztM0_level2_quad_clean.evt
Size (bytes)360,630,72058,389,120
Size343.9 MB 55.7 MB
Events in quadrant A2,158,086383,467
Events in quadrant B2,590,760380,392
Events in quadrant C2,181,958377,266
Events in quadrant D3,704,476330,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087832
B0101751
C088731
D0137981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4203140.333095%
B42032245.329527%
C4203431.023079%
D420351312.205567%

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 5468 4204 0 0 0.00% 0.00%
B 5468 4204 127 127 2.32% 3.02%
C 5468 4204 0 0 0.00% 0.00%
D 5468 4204 396 396 7.24% 9.42%

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 8 205 26115 231.8 547 537 110.3
A 14 238 9467 80.93 547 537 110.3
A 4 2 8272 70.1 547 537 110.3
B 4 142 393888 3880.57 537 524 101.4
B 7 220 69634 681.77 537 524 101.4
B 12 111 11976 112.97 537 524 101.4
C 14 238 84539 678.82 530 534 123.8
C 3 233 26312 208.3 530 534 123.8
C 13 61 3786 26.28 530 534 123.8
D 1 52 1785657 14700.82 503 491 121.4
D 2 234 19251 154.49 503 491 121.4
D 12 6 7434 57.18 503 491 121.4

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