ASTROSAT CZTI

Data Quality Report

Orbit 35762

Creation date: 2022-07-18T21:31:47.926668
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_058T14_9000005134_35762cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35762cztM0_level2_quad_clean.evt
Size (bytes)869,708,160114,318,720
Size829.4 MB 109.0 MB
Events in quadrant A5,615,196696,244
Events in quadrant B6,185,700697,738
Events in quadrant C6,222,231676,810
Events in quadrant D7,582,528639,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236164
B0253083
C0250473
D0300073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1085770.064475%
B108572332.146081%
C108572031.869761%
D108575254.835590%

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 14977 10860 0 0 0.00% 0.00%
B 14977 10860 163 163 1.09% 1.50%
C 14977 10860 186 186 1.24% 1.71%
D 14977 10860 523 523 3.49% 4.82%

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 15 223 493867 1959.44 1244 1217 251.4
A 10 83 271953 1076.81 1244 1217 251.4
A 13 6 29486 112.44 1244 1217 251.4
B 5 172 731011 3115.7 1227 1195 234.2
B 0 213 224790 954.56 1227 1195 234.2
B 5 255 125104 528.99 1227 1195 234.2
C 1 23 889750 3208.04 1193 1201 277.0
C 15 214 449258 1617.68 1193 1201 277.0
C 0 10 165666 593.79 1193 1201 277.0
D 1 52 1693497 5918.52 1184 1151 285.9
D 13 249 549740 1918.54 1184 1151 285.9
D 7 80 259888 904.86 1184 1151 285.9

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