ASTROSAT CZTI

Data Quality Report

Orbit 33461

Creation date: 2024-06-27T20:49:13.889955
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/AS1A11_065T10_9000004800_33461cztM0_level2.evt modeM0/AS1A11_065T10_9000004800_33461cztM0_level2_quad_clean.evt
Size (bytes)168,621,12029,347,200
Size160.8 MB 28.0 MB
Events in quadrant A879,268191,515
Events in quadrant B1,182,141188,439
Events in quadrant C1,086,706186,889
Events in quadrant D1,823,388178,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039671
B047341
C044401
D067351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195620.102249%
B1956361.840491%
C1956402.044990%
D1956924.703476%

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 3388 1957 0 0 0.00% 0.00%
B 3388 1957 24 24 0.71% 1.23%
C 3388 1957 29 29 0.86% 1.48%
D 3388 1957 66 66 1.95% 3.37%

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 7 192 4274 86.87 223 219 46.7
A 13 6 4144 84.09 223 219 46.7
A 13 254 4094 83.02 223 219 46.7
B 5 172 136273 3052.53 222 216 44.6
B 5 255 38153 851.14 222 216 44.6
B 0 190 29514 657.32 222 216 44.6
C 0 10 89523 1704.17 219 221 52.4
C 15 214 86161 1640.02 219 221 52.4
C 1 23 30247 572.99 219 221 52.4
D 8 195 651275 11309.89 216 211 57.6
D 12 233 99087 1717.61 216 211 57.6
D 10 118 57103 988.29 216 211 57.6

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