ASTROSAT CZTI

Data Quality Report

Orbit 17986

Creation date: 2024-06-27T17:43:28.091193
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/AS1A05_108T02_9000002676_17986cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17986cztM0_level2_quad_clean.evt
Size (bytes)1,096,041,600171,982,080
Size1.0 GB 164.0 MB
Events in quadrant A10,358,7591,041,244
Events in quadrant B6,802,8801,098,477
Events in quadrant C6,856,3361,060,602
Events in quadrant D8,229,4931,041,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02880
D02880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398343
B0295713
C0291643
D0343923

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139998536.093292%
B139991491.064362%
C139992071.478677%
D140005203.714286%

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 15164 14002 608 608 4.01% 4.34%
B 15164 14002 10 10 0.07% 0.07%
C 15164 14002 4 4 0.03% 0.03%
D 15165 14003 386 386 2.55% 2.76%

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 14 237 3837066 11438.87 1655 1616 335.3
A 15 174 139761 412.0 1655 1616 335.3
A 4 2 24930 69.53 1655 1616 335.3
B 7 220 69762 209.4 1684 1637 325.3
B 12 111 39395 116.06 1684 1637 325.3
B 11 111 33825 98.94 1684 1637 325.3
C 14 238 248821 645.88 1627 1642 382.7
C 3 233 235986 612.34 1627 1642 382.7
C 9 160 18619 44.36 1627 1642 382.7
D 7 238 906363 2215.49 1612 1571 408.4
D 5 222 514234 1255.31 1612 1571 408.4
D 11 176 479572 1170.44 1612 1571 408.4

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