ASTROSAT CZTI

Data Quality Report

Orbit 52660

Creation date: 2025-06-24T11:02:36.062938
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_011T07_9000006480_52660cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52660cztM0_level2_quad_clean.evt
Size (bytes)1,068,088,32086,512,320
Size1018.6 MB 82.5 MB
Events in quadrant A5,258,584694,781
Events in quadrant B11,383,310552,448
Events in quadrant C14,524,668299,537
Events in quadrant D7,797,566554,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210143
B0389572
C0482562
D0283612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7438971.304114%
B7438220229.604732%
C7438438358.927131%
D7438108314.560366%

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 8008 7439 60 60 0.75% 0.81%
B 8008 7438 1718 1718 21.45% 23.10%
C 8008 7438 4304 4304 53.75% 57.87%
D 8008 7439 1165 1165 14.55% 15.66%

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 3 14 1722732 9170.41 748 729 187.8
A 3 62 128971 682.94 748 729 187.8
A 5 240 98359 519.92 748 729 187.8
B 10 128 5492167 37411.58 691 668 146.8
B 10 254 1836371 12505.97 691 668 146.8
B 2 249 387429 2634.86 691 668 146.8
C 15 233 9432970 67188.54 508 505 140.4
C 15 248 758923 5402.3 508 505 140.4
C 10 22 689979 4911.2 508 505 140.4
D 8 176 1871086 9313.25 686 652 200.8
D 2 153 991672 4934.48 686 652 200.8
D 1 7 944562 4699.91 686 652 200.8

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