ASTROSAT CZTI

Data Quality Report

Orbit 51174

Creation date: 2025-03-15T09:45:35.132626
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_51174cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51174cztM0_level2_quad_clean.evt
Size (bytes)693,815,04088,634,880
Size661.7 MB 84.5 MB
Events in quadrant A5,781,220590,859
Events in quadrant B4,230,772653,393
Events in quadrant C10,900,542452,070
Events in quadrant D4,278,198542,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215602
B0171772
C0368282
D0174092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63712814.410611%
B63722594.064658%
C6372187729.456999%
D63722824.425612%

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 7491 6372 278 278 3.71% 4.36%
B 7492 6373 173 173 2.31% 2.71%
C 7492 6373 2111 2111 28.18% 33.12%
D 7492 6373 266 266 3.55% 4.17%

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 4 1149025 7122.16 648 632 161.2
A 12 3 1015489 6293.99 648 632 161.2
A 4 249 236644 1463.71 648 632 161.2
B 8 128 623560 4464.49 658 636 139.5
B 5 185 355249 2541.51 658 636 139.5
B 7 252 94032 669.37 658 636 139.5
C 12 247 4889715 31773.12 544 538 153.9
C 4 12 2969363 19293.39 544 538 153.9
C 13 3 256970 1666.47 544 538 153.9
D 7 96 573711 3255.35 625 602 176.1
D 2 62 391150 2218.38 625 602 176.1
D 8 176 164410 930.46 625 602 176.1

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