ASTROSAT CZTI

Data Quality Report

Orbit 37196

Creation date: 2024-06-27T21:36:46.245548
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/AS1A11_079T01_9000005284_37196cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37196cztM0_level2_quad_clean.evt
Size (bytes)1,313,616,960172,880,640
Size1.2 GB 164.9 MB
Events in quadrant A7,982,1881,060,950
Events in quadrant B8,240,3151,069,555
Events in quadrant C11,294,8021,051,276
Events in quadrant D11,214,857978,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337355
B0349914
C0432284
D0443594

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155811100.705988%
B155811330.853604%
C155817034.511906%
D155819125.853283%

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 19760 15584 77 77 0.39% 0.49%
B 19760 15584 68 68 0.34% 0.44%
C 19760 15584 987 987 4.99% 6.33%
D 19760 15584 919 919 4.65% 5.90%

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 10 83 637555 1782.6 1780 1748 356.7
A 15 237 267245 744.37 1780 1748 356.7
A 7 3 114492 316.1 1780 1748 356.7
B 5 172 441141 1309.75 1764 1719 335.5
B 0 213 397241 1178.9 1764 1719 335.5
B 0 245 123358 362.56 1764 1719 335.5
C 10 49 3018128 7546.08 1717 1730 399.7
C 15 214 650350 1622.64 1717 1730 399.7
C 1 23 634319 1582.54 1717 1730 399.7
D 10 253 2566804 6190.58 1701 1655 414.4
D 2 249 1147584 2765.52 1701 1655 414.4
D 13 249 298387 716.12 1701 1655 414.4

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