ASTROSAT CZTI

Data Quality Report

Orbit 54781

Creation date: 2025-11-14T21:29:21.317931
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_103T01_9000006524_54781cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54781cztM0_level2_quad_clean.evt
Size (bytes)286,128,00054,771,840
Size272.9 MB 52.2 MB
Events in quadrant A2,263,715356,808
Events in quadrant B2,115,782376,157
Events in quadrant C2,932,913332,185
Events in quadrant D2,974,477318,078

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0844
B0846
C0842
D0833

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09977300
B09454309
C011988546
D012327651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39002035.205128%
B39011874.793643%
C38922596.654676%
D38943158.089368%

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 8918 3939 100 100 1.12% 2.54%
B 8918 3947 35 35 0.39% 0.89%
C 8919 3932 152 152 1.70% 3.87%
D 8919 3937 228 228 2.56% 5.79%

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 13 248 484441 4568.02 420 409 106.0
A 0 8 100796 947.4 420 409 106.0
A 13 254 10618 96.35 420 409 106.0
B 5 185 188845 2088.55 414 399 90.2
B 2 249 101772 1123.52 414 399 90.2
B 4 171 93999 1037.37 414 399 90.2
C 9 38 620390 5533.84 397 393 112.0
C 13 3 382175 3407.63 397 393 112.0
C 14 254 132747 1181.34 397 393 112.0
D 15 94 428249 3819.45 393 375 112.0
D 11 129 407756 3636.51 393 375 112.0
D 15 170 260804 2324.74 393 375 112.0

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