ASTROSAT CZTI

Data Quality Report

Orbit 10803

Creation date: 2024-06-27T16:04:06.530681
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/AS1A03_071T01_9000001562_10803cztM0_level2.evt modeM0/AS1A03_071T01_9000001562_10803cztM0_level2_quad_clean.evt
Size (bytes)529,044,48077,319,360
Size504.5 MB 73.7 MB
Events in quadrant A5,731,316421,232
Events in quadrant B4,211,330482,392
Events in quadrant C2,634,063552,055
Events in quadrant D3,063,639492,201

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220411529
B0256009346
C0174005139
D0210537711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017446
B017444
C017454
D017456

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5282114621.696327%
B547856010.222709%
C5894641.085850%
D56481302.301700%

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 8905 6327 766 766 8.60% 12.11%
B 8902 6550 231 231 2.59% 3.53%
C 8905 6970 0 0 0.00% 0.00%
D 8905 6653 32 32 0.36% 0.48%

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 8 5 3558736 31289.82 547 534 113.7
A 15 174 52972 461.12 547 534 113.7
A 8 15 6605 53.39 547 534 113.7
B 4 239 1285787 10695.45 621 605 120.2
B 0 85 329572 2737.71 621 605 120.2
B 15 204 129452 1072.28 621 605 120.2
C 13 61 4999 27.1 674 677 159.5
C 8 222 3847 19.88 674 677 159.5
C 12 4 2097 8.91 674 677 159.5
D 13 138 235037 1533.76 629 611 152.8
D 8 195 193317 1260.8 629 611 152.8
D 12 233 67533 437.84 629 611 152.8

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