ASTROSAT CZTI

Data Quality Report

Orbit 51261

Creation date: 2025-03-21T03:05:18.284843
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/AS1C07_001T01_9000006454_51261cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51261cztM0_level2_quad_clean.evt
Size (bytes)812,661,12079,715,520
Size775.0 MB 76.0 MB
Events in quadrant A5,294,902625,155
Events in quadrant B4,430,324669,962
Events in quadrant C15,280,562101,311
Events in quadrant D4,575,556566,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202402
B0176212
C0498532
D0181712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64591562.415235%
B64603174.907121%
C6460560786.795666%
D64592644.087320%

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 7604 6460 84 84 1.10% 1.30%
B 7605 6461 194 194 2.55% 3.00%
C 7604 6459 5144 5144 67.65% 79.64%
D 7604 6460 243 243 3.20% 3.76%

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 1703651 10108.93 684 668 168.5
A 12 194 197165 1166.41 684 668 168.5
A 12 80 97578 575.26 684 668 168.5
B 5 185 652715 4505.64 683 659 144.7
B 8 128 260727 1797.04 683 659 144.7
B 10 254 231449 1594.73 683 659 144.7
C 4 12 10350113 148016.02 248 245 69.9
C 15 248 3106013 44416.36 248 245 69.9
C 1 60 559906 8003.85 248 245 69.9
D 6 42 570989 3065.5 667 644 186.1
D 2 216 219852 1178.2 667 644 186.1
D 8 176 183522 982.94 667 644 186.1

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