ASTROSAT CZTI

Data Quality Report

Orbit 53614

Creation date: 2025-08-26T14:11:05.187204
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_004T05_9000006502_53614cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53614cztM0_level2_quad_clean.evt
Size (bytes)1,022,440,32071,536,320
Size975.1 MB 68.2 MB
Events in quadrant A13,404,173195,704
Events in quadrant B4,488,917693,517
Events in quadrant C13,339,035272,054
Events in quadrant D6,114,727552,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442652
B0177022
C0439056
D0225712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484470972.624923%
B64842453.778532%
C6483400561.776955%
D64836479.979948%

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 7625 6479 4430 4430 58.10% 68.37%
B 7626 6484 135 135 1.77% 2.08%
C 7624 6481 3793 3793 49.75% 58.52%
D 7625 6484 637 637 8.35% 9.82%

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 95 6624216 63837.34 411 401 103.8
A 3 78 3995817 38506.02 411 401 103.8
A 15 174 428973 4130.38 411 401 103.8
B 10 254 952660 6192.2 723 698 153.7
B 5 172 370817 2407.5 723 698 153.7
B 0 213 88516 571.23 723 698 153.7
C 1 241 8160593 65399.11 457 453 124.8
C 15 224 1317719 10557.18 457 453 124.8
C 7 80 687391 5505.44 457 453 124.8
D 8 176 2535059 13078.21 685 654 193.8
D 10 172 203413 1046.29 685 654 193.8
D 13 153 132671 681.24 685 654 193.8

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