ASTROSAT CZTI

Data Quality Report

Orbit 05677

Creation date: 2024-06-27T14:57:52.827803
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/AS1A02_077T01_9000000732_05677cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05677cztM0_level2_quad_clean.evt
Size (bytes)706,596,480101,502,720
Size673.9 MB 96.8 MB
Events in quadrant A4,649,311606,934
Events in quadrant B6,425,039589,422
Events in quadrant C4,610,521605,845
Events in quadrant D5,039,668581,505

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020919114
B025897150
C020885136
D022125122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02046
B02040
C02040
D02040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99581051.054429%
B99473853.870514%
C9948690.693607%
D9965990.993477%

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 11144 10010 0 0 0.00% 0.00%
B 11144 10011 181 181 1.62% 1.81%
C 11144 10011 3 3 0.03% 0.03%
D 11144 10009 35 35 0.31% 0.35%

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 2 38353 151.75 1187 1162 245.1
A 0 50 29252 114.61 1187 1162 245.1
A 0 226 11772 43.29 1187 1162 245.1
B 5 172 705625 3079.19 1184 1156 228.8
B 15 204 499188 2176.87 1184 1156 228.8
B 0 219 200682 872.12 1184 1156 228.8
C 1 16 115147 424.21 1147 1152 268.7
C 13 61 9300 30.32 1147 1152 268.7
C 8 222 7471 23.52 1147 1152 268.7
D 2 152 249495 878.87 1145 1110 282.6
D 2 136 168237 591.35 1145 1110 282.6
D 10 15 137128 481.28 1145 1110 282.6

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