ASTROSAT CZTI

Data Quality Report

Orbit 00188

Creation date: 2024-06-27T13:57:31.155360
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/AS1P01_120T01_9000000016_00188cztM0_level2.evt modeM0/AS1P01_120T01_9000000016_00188cztM0_level2_quad_clean.evt
Size (bytes)953,942,40086,106,240
Size909.8 MB 82.1 MB
Events in quadrant A6,777,888554,613
Events in quadrant B7,269,716569,614
Events in quadrant C6,240,579569,411
Events in quadrant D8,239,107530,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224112
B0224112
C0224112
D0224112

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04796323983
B05104225522
C04486622434
D05678928400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03216
B03216
C03216
D03216

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547640.073046%
B54762284.163623%
C547670.127831%
D54752905.296804%

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 7067 5478 187 187 2.65% 3.41%
B 7067 5478 488 488 6.91% 8.91%
C 7067 5478 66 66 0.93% 1.20%
D 7067 5478 920 920 13.02% 16.79%

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 13 145 106713 280.44 1697 1684 374.5
A 13 164 39675 101.44 1697 1684 374.5
A 13 17 23898 59.31 1697 1684 374.5
B 0 247 730212 1873.09 1675 1692 388.9
B 8 5 29214 70.76 1675 1692 388.9
B 14 50 18962 44.4 1675 1692 388.9
C 0 202 13028 26.09 1574 1637 436.7
C 7 158 10587 20.5 1574 1637 436.7
C 7 143 10257 19.74 1574 1637 436.7
D 12 249 2092645 4535.67 1524 1576 461.0
D 13 6 73185 155.32 1524 1576 461.0
D 2 106 32401 66.86 1524 1576 461.0

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