ASTROSAT CZTI

Data Quality Report

Orbit 50231

Creation date: 2025-01-11T16:02:07.949720
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/AS1C09_003T01_9000006442_50231cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50231cztM0_level2_quad_clean.evt
Size (bytes)863,850,24073,192,320
Size823.8 MB 69.8 MB
Events in quadrant A4,195,060599,101
Events in quadrant B3,701,561664,344
Events in quadrant C13,228,191162,019
Events in quadrant D10,372,274358,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164518
B0151761
C0435141
D0350401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61963405.487411%
B61971863.001452%
C6197469275.714055%
D6197249940.325964%

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 7321 6197 206 206 2.81% 3.32%
B 7322 6198 63 63 0.86% 1.02%
C 7322 6198 4245 4245 57.98% 68.49%
D 7322 6198 2690 2690 36.74% 43.40%

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 38 215106 1302.26 668 652 164.7
A 12 250 140509 849.27 668 652 164.7
A 15 174 135113 816.51 668 652 164.7
B 5 32 311348 2211.15 667 646 140.5
B 8 128 96139 679.59 667 646 140.5
B 10 28 87646 619.15 667 646 140.5
C 4 111 6399861 69927.76 331 330 91.5
C 15 197 3766534 41153.36 331 330 91.5
C 15 127 1021735 11160.91 331 330 91.5
D 7 61 4098055 27672.96 521 503 148.1
D 15 108 1033745 6978.03 521 503 148.1
D 15 58 770087 5197.41 521 503 148.1

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