ASTROSAT CZTI

Data Quality Report

Orbit 51260

Creation date: 2025-03-21T01:03:50.178063
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_51260cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51260cztM0_level2_quad_clean.evt
Size (bytes)700,266,24085,512,960
Size667.8 MB 81.6 MB
Events in quadrant A5,340,162610,492
Events in quadrant B4,149,375666,675
Events in quadrant C11,430,365303,717
Events in quadrant D4,495,888553,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203872
B0168502
C0384202
D0180432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65272563.922169%
B65272423.707676%
C6527348253.347633%
D65262984.566350%

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 7587 6527 175 175 2.31% 2.68%
B 7587 6527 144 144 1.90% 2.21%
C 7586 6526 3145 3145 41.46% 48.19%
D 7586 6527 239 239 3.15% 3.66%

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 12 3 1370995 7914.48 692 674 173.1
A 3 79 174931 1006.44 692 674 173.1
A 12 194 159507 917.36 692 674 173.1
B 5 185 347298 2371.36 690 666 146.2
B 8 128 191293 1304.11 690 666 146.2
B 4 206 164375 1119.96 690 666 146.2
C 4 12 7718194 61119.02 453 450 126.3
C 15 205 1174325 9296.25 453 450 126.3
C 3 233 476558 3770.44 453 450 126.3
D 8 176 384891 2082.6 669 645 184.5
D 6 42 344451 1863.41 669 645 184.5
D 10 181 215285 1163.34 669 645 184.5

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