ASTROSAT CZTI

Data Quality Report

Orbit 34696

Creation date: 2022-07-18T18:50:42.286921
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/AS1A07_138T08_9000004970_34696cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34696cztM0_level2_quad_clean.evt
Size (bytes)521,458,56081,244,800
Size497.3 MB 77.5 MB
Events in quadrant A2,845,508544,326
Events in quadrant B5,089,722497,587
Events in quadrant C2,822,116542,610
Events in quadrant D4,672,129500,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116862
B0185111
C0113891
D0174341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5362350.652742%
B536282515.386050%
C5362230.428944%
D53623226.005222%

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 7335 5363 33 33 0.45% 0.62%
B 7335 5363 664 664 9.05% 12.38%
C 7335 5363 13 13 0.18% 0.24%
D 7335 5363 247 247 3.37% 4.61%

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 15 174 191570 1481.43 652 641 128.9
A 10 83 48174 368.81 652 641 128.9
A 9 143 22436 169.11 652 641 128.9
B 5 172 2275995 19815.57 611 597 114.8
B 5 255 278540 2420.5 611 597 114.8
B 0 190 62336 537.66 611 597 114.8
C 15 214 232153 1606.6 629 633 144.1
C 0 10 105135 725.18 629 633 144.1
C 14 67 30043 204.09 629 633 144.1
D 8 195 1295315 8881.29 606 592 145.8
D 7 38 573575 3930.44 606 592 145.8
D 2 250 126619 864.5 606 592 145.8

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