ASTROSAT CZTI

Data Quality Report

Orbit 51934

Creation date: 2025-05-05T12:18:33.497910
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_011T05_9000006466_51934cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51934cztM0_level2_quad_clean.evt
Size (bytes)1,058,883,84079,833,600
Size1009.8 MB 76.1 MB
Events in quadrant A8,092,630590,718
Events in quadrant B4,836,545683,064
Events in quadrant C12,896,184343,914
Events in quadrant D12,811,112293,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291451
B0196171
C0433421
D0431861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7258105314.508129%
B72585147.081841%
C7258376751.901350%
D7259391953.988153%

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 7348 7258 832 832 11.32% 11.46%
B 7347 7257 234 234 3.18% 3.22%
C 7348 7258 3584 3584 48.78% 49.38%
D 7349 7259 3716 3716 50.56% 51.19%

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 12 3 1251647 7038.89 716 697 177.7
A 4 159 1217058 6844.27 716 697 177.7
A 7 64 840310 4724.37 716 697 177.7
B 12 32 509238 3254.28 730 704 156.3
B 4 171 294296 1878.8 730 704 156.3
B 4 206 209730 1337.63 730 704 156.3
C 15 224 4936879 32988.32 530 524 149.6
C 9 38 2977685 19895.56 530 524 149.6
C 0 193 1011551 6756.42 530 524 149.6
D 15 94 4653059 35687.58 454 435 130.4
D 12 17 3850653 29532.79 454 435 130.4
D 2 172 1578811 12106.81 454 435 130.4

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