ASTROSAT CZTI

Data Quality Report

Orbit 00226

Creation date: 2024-06-27T13:58:08.915095
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/AS1P01_123T01_9000000024_00226cztM0_level2.evt modeM0/AS1P01_123T01_9000000024_00226cztM0_level2_quad_clean.evt
Size (bytes)948,473,28081,069,120
Size904.5 MB 77.3 MB
Events in quadrant A7,012,463518,055
Events in quadrant B7,663,402521,965
Events in quadrant C6,275,488522,621
Events in quadrant D7,400,229498,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248372
B0267511
C0226531
D0259776

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5623571.013694%
B5623681.209319%
C562330.053352%
D5622951.689790%

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 7330 5625 198 198 2.70% 3.52%
B 7330 5625 394 394 5.38% 7.00%
C 7330 5625 53 53 0.72% 0.94%
D 7329 5624 446 446 6.09% 7.93%

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 0 253 167540 423.91 1749 1729 391.1
A 12 150 31253 75.48 1749 1729 391.1
A 11 242 21046 49.39 1749 1729 391.1
B 7 251 335033 820.31 1717 1728 406.3
B 7 220 328704 804.73 1717 1728 406.3
B 5 46 266667 652.05 1717 1728 406.3
C 9 188 52612 116.63 1561 1614 437.3
C 2 53 50894 112.7 1561 1614 437.3
C 1 1 26225 56.28 1561 1614 437.3
D 1 4 1344884 2878.89 1538 1584 466.6
D 2 85 44151 91.23 1538 1584 466.6
D 7 38 40398 83.18 1538 1584 466.6

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