ASTROSAT CZTI

Data Quality Report

Orbit 51214

Creation date: 2025-03-18T00:02:50.493332
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_51214cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51214cztM0_level2_quad_clean.evt
Size (bytes)637,894,08089,170,560
Size608.3 MB 85.0 MB
Events in quadrant A4,227,122606,008
Events in quadrant B4,768,901652,114
Events in quadrant C8,085,472456,167
Events in quadrant D6,019,711525,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171511
B0185511
C0285251
D0224821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66032303.483265%
B66032363.574133%
C6603176626.745419%
D66035788.753597%

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 7448 6604 163 163 2.19% 2.47%
B 7448 6603 124 124 1.66% 1.88%
C 7448 6603 1667 1667 22.38% 25.25%
D 7448 6603 480 480 6.44% 7.27%

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 26 298833 1745.93 693 674 170.8
A 3 114 284357 1661.17 693 674 170.8
A 12 3 181973 1061.63 693 674 170.8
B 10 254 594313 3990.02 689 663 148.8
B 4 171 272106 1824.41 689 663 148.8
B 10 14 204475 1369.85 689 663 148.8
C 4 12 4393371 26731.57 598 594 164.3
C 10 252 418545 2543.38 598 594 164.3
C 4 13 251368 1526.05 598 594 164.3
D 15 108 900780 4819.37 661 638 186.8
D 7 39 424945 2271.74 661 638 186.8
D 3 12 389006 2079.33 661 638 186.8

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