ASTROSAT CZTI

Data Quality Report

Orbit 51936

Creation date: 2025-05-05T15:37:17.736717
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_51936cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51936cztM0_level2_quad_clean.evt
Size (bytes)1,063,696,32085,397,760
Size1014.4 MB 81.4 MB
Events in quadrant A7,693,084619,733
Events in quadrant B7,760,992611,611
Events in quadrant C11,897,156426,991
Events in quadrant D11,443,534403,528

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281360
B0283287
C0405190
D0390680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A751792312.278835%
B7516149819.930814%
C7516309241.138904%
D7516293239.010112%

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 7516 7516 822 822 10.94% 10.94%
B 7515 7515 1252 1252 16.66% 16.66%
C 7516 7516 2916 2916 38.80% 38.80%
D 7515 7515 2885 2885 38.39% 38.39%

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 4 159 1777714 9752.62 727 710 182.2
A 12 3 1108568 6080.19 727 710 182.2
A 7 64 659684 3616.61 727 710 182.2
B 12 32 3345717 22820.69 685 662 146.6
B 4 81 482466 3286.97 685 662 146.6
B 4 206 437717 2981.68 685 662 146.6
C 15 224 5183655 30756.99 600 594 168.5
C 15 230 976986 5794.04 600 594 168.5
C 12 249 917848 5443.11 600 594 168.5
D 0 33 3178266 18840.05 588 561 168.7
D 2 172 1128894 6689.69 588 561 168.7
D 6 42 1083522 6420.68 588 561 168.7

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