ASTROSAT CZTI

Data Quality Report

Orbit 26199

Creation date: 2024-06-27T19:26:00.853484
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/AS1C05_007T01_9000003786_26199cztM0_level2.evt modeM0/AS1C05_007T01_9000003786_26199cztM0_level2_quad_clean.evt
Size (bytes)520,081,92067,700,160
Size496.0 MB 64.6 MB
Events in quadrant A3,726,029413,969
Events in quadrant B3,667,297420,197
Events in quadrant C3,652,686391,806
Events in quadrant D4,274,177380,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148650
B0147180
C0147020
D0166300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63551071.683714%
B63551001.573564%
C63541472.313503%
D63542523.966006%

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 7710 6356 9 9 0.12% 0.14%
B 7710 6356 0 0 0.00% 0.00%
C 7709 6355 4 4 0.05% 0.06%
D 7709 6355 182 182 2.36% 2.86%

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 0 13 144145 779.8 930 917 183.7
A 13 254 9647 47.53 930 917 183.7
A 0 226 7876 37.89 930 917 183.7
B 0 190 38975 220.95 926 907 172.3
B 12 111 20152 111.7 926 907 172.3
B 11 111 17968 99.02 926 907 172.3
C 14 238 143997 705.64 880 887 202.8
C 2 16 41741 201.44 880 887 202.8
C 3 233 40564 195.64 880 887 202.8
D 1 52 900074 4323.05 875 856 208.0
D 12 233 59601 282.42 875 856 208.0
D 2 234 23207 107.45 875 856 208.0

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