ASTROSAT CZTI

Data Quality Report

Orbit 22600

Creation date: 2024-06-27T18:43:24.100183
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/AS1C05_006T01_9000003356_22600cztM0_level2.evt modeM0/AS1C05_006T01_9000003356_22600cztM0_level2_quad_clean.evt
Size (bytes)968,667,840165,133,440
Size923.8 MB 157.5 MB
Events in quadrant A7,392,5561,019,872
Events in quadrant B7,120,8931,034,575
Events in quadrant C6,862,275995,257
Events in quadrant D7,013,631985,278

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312023
B0301993
C0290933
D0305123

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139873552.538071%
B139883282.344867%
C139882631.880183%
D139871401.000929%

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 15162 13990 149 149 0.98% 1.07%
B 15163 13991 25 25 0.16% 0.18%
C 15163 13991 5 5 0.03% 0.04%
D 15162 13990 30 30 0.20% 0.21%

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 14 238 558868 1618.99 1710 1671 344.2
A 14 235 237863 686.28 1710 1671 344.2
A 13 254 24413 66.08 1710 1671 344.2
B 0 245 138707 418.45 1710 1665 327.5
B 0 229 133495 402.54 1710 1665 327.5
B 12 111 40006 117.07 1710 1665 327.5
C 14 238 257713 659.19 1649 1658 388.4
C 10 222 102493 259.59 1649 1658 388.4
C 10 22 47891 119.02 1649 1658 388.4
D 1 239 250812 599.31 1680 1631 415.8
D 1 52 155569 370.24 1680 1631 415.8
D 12 227 102795 243.31 1680 1631 415.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter