ASTROSAT CZTI

Data Quality Report

Orbit 54185

Creation date: 2025-10-04T00:53:19.971771
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/AS1A14_012T01_9000006512_54185cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54185cztM0_level2_quad_clean.evt
Size (bytes)602,628,48096,923,520
Size574.7 MB 92.4 MB
Events in quadrant A4,782,323642,356
Events in quadrant B4,143,020706,229
Events in quadrant C4,887,524610,799
Events in quadrant D7,949,989486,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192391
B0171371
C0195692
D0286021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70204346.182336%
B70211682.392822%
C70204125.868946%
D7020149521.296296%

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 7565 7022 299 299 3.95% 4.26%
B 7566 7023 45 45 0.59% 0.64%
C 7565 7022 294 294 3.89% 4.19%
D 7565 7021 1255 1255 16.59% 17.87%

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 12 115 567610 3134.19 721 704 180.9
A 7 29 556543 3073.0 721 704 180.9
A 15 174 501381 2768.03 721 704 180.9
B 15 20 390478 2515.47 728 701 155.0
B 14 167 303719 1955.56 728 701 155.0
B 0 213 180652 1161.33 728 701 155.0
C 15 177 761662 3928.41 708 701 193.7
C 15 215 707121 3646.85 708 701 193.7
C 13 3 268206 1380.98 708 701 193.7
D 8 176 3707246 20746.45 635 607 178.7
D 2 172 1122323 6278.36 635 607 178.7
D 2 165 192083 1071.71 635 607 178.7

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