ASTROSAT CZTI

Data Quality Report

Orbit 03771

Creation date: 2024-06-27T14:33:27.811898
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/AS1G05_248T01_9000000486_03771cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03771cztM0_level2_quad_clean.evt
Size (bytes)749,004,480114,736,320
Size714.3 MB 109.4 MB
Events in quadrant A5,889,328684,421
Events in quadrant B6,252,975687,361
Events in quadrant C4,671,313686,101
Events in quadrant D5,136,687666,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251662
B0260941
C0219431
D0233761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108282462.271888%
B108281020.942002%
C10828160.147765%
D108281211.117473%

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 11403 10829 164 164 1.44% 1.51%
B 11403 10829 60 60 0.53% 0.55%
C 11403 10829 0 0 0.00% 0.00%
D 11403 10828 91 91 0.80% 0.84%

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 0 118 539266 2188.89 1194 1164 245.8
A 13 251 520080 2110.84 1194 1164 245.8
A 0 50 124558 501.94 1194 1164 245.8
B 15 204 991852 4164.63 1221 1190 237.9
B 5 70 393081 1647.46 1221 1190 237.9
B 4 81 39678 161.8 1221 1190 237.9
C 14 234 52123 186.22 1173 1176 273.6
C 8 128 15939 53.96 1173 1176 273.6
C 13 61 9906 31.91 1173 1176 273.6
D 13 239 291800 1031.61 1162 1125 281.8
D 10 246 137901 485.42 1162 1125 281.8
D 1 84 87636 307.03 1162 1125 281.8

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
Veto Counter