ASTROSAT CZTI

Data Quality Report

Orbit 07485

Creation date: 2024-06-27T15:20:19.374620
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/AS1A02_058T02_9000001030_07485cztM0_level2.evt modeM0/AS1A02_058T02_9000001030_07485cztM0_level2_quad_clean.evt
Size (bytes)264,991,68054,034,560
Size252.7 MB 51.5 MB
Events in quadrant A1,874,831341,215
Events in quadrant B1,920,272347,586
Events in quadrant C1,821,400345,677
Events in quadrant D2,144,244328,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083301
B083881
C081451
D092691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3872611.575413%
B3872782.014463%
C3872380.981405%
D38721203.099174%

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 5082 3873 1 1 0.02% 0.03%
B 5082 3873 1 1 0.02% 0.03%
C 5082 3873 1 1 0.02% 0.03%
D 5082 3873 51 51 1.00% 1.32%

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 15 234 44010 451.58 467 457 96.4
A 15 239 14550 146.12 467 457 96.4
A 0 23 9697 95.81 467 457 96.4
B 4 173 33446 356.83 475 465 92.4
B 0 214 30110 320.73 475 465 92.4
B 4 81 11640 120.9 475 465 92.4
C 1 16 16617 148.42 462 465 108.8
C 13 61 3624 29.03 462 465 108.8
C 8 222 2832 21.75 462 465 108.8
D 2 152 172311 1519.68 453 439 113.1
D 2 136 76346 671.16 453 439 113.1
D 2 14 63165 554.62 453 439 113.1

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