ASTROSAT CZTI

Data Quality Report

Orbit 31694

Creation date: 2024-06-27T20:31:37.056335
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/AS1A10_103T09_9000004630_31694cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31694cztM0_level2_quad_clean.evt
Size (bytes)832,092,480125,565,120
Size793.5 MB 119.7 MB
Events in quadrant A5,824,402786,738
Events in quadrant B7,756,487788,617
Events in quadrant C5,381,393777,723
Events in quadrant D5,565,623760,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239572
B0307992
C0221862
D0227472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99442912.926388%
B99452562.574158%
C99452752.765209%
D99451371.377577%

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 10929 9946 95 95 0.87% 0.96%
B 10930 9947 46 46 0.42% 0.46%
C 10930 9947 37 37 0.34% 0.37%
D 10930 9947 44 44 0.40% 0.44%

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 1190531 4958.96 1190 1164 239.8
A 14 238 22962 90.88 1190 1164 239.8
A 13 254 18126 70.72 1190 1164 239.8
B 6 159 2673514 11743.69 1179 1147 227.6
B 5 172 157861 688.68 1179 1147 227.6
B 4 80 117807 512.66 1179 1147 227.6
C 0 10 251427 923.79 1141 1147 270.9
C 10 22 207922 763.21 1141 1147 270.9
C 14 238 182900 670.86 1141 1147 270.9
D 8 195 721679 2619.14 1154 1123 275.1
D 1 52 216457 782.71 1154 1123 275.1
D 13 249 101095 363.39 1154 1123 275.1

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