ASTROSAT CZTI

Data Quality Report

Orbit 40172

Creation date: 2024-06-27T22:13:06.125085
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/AS1A12_032T04_9000005528_40172cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40172cztM0_level2_quad_clean.evt
Size (bytes)395,231,04061,761,600
Size376.9 MB 58.9 MB
Events in quadrant A2,022,608471,156
Events in quadrant B1,906,510487,723
Events in quadrant C7,400,285240,584
Events in quadrant D2,991,926391,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084282
B084251
C0247211
D0117351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A395860.151592%
B3958340.859020%
C3958209652.956038%
D39583568.994442%

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 6111 3959 3 3 0.05% 0.08%
B 6111 3959 23 23 0.38% 0.58%
C 6111 3959 2171 2171 35.53% 54.84%
D 6111 3959 360 360 5.89% 9.09%

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 10 83 299236 3379.63 434 425 88.4
A 7 3 21440 237.69 434 425 88.4
A 2 79 18679 206.46 434 425 88.4
B 5 172 153630 1836.53 435 425 83.4
B 0 245 22839 268.69 435 425 83.4
B 4 171 12243 141.67 435 425 83.4
C 9 187 5912817 74445.18 338 341 79.4
C 15 214 129603 1627.56 338 341 79.4
C 0 10 29453 366.56 338 341 79.4
D 12 227 742766 7538.19 409 400 98.5
D 1 47 467382 4741.87 409 400 98.5
D 13 249 84904 858.08 409 400 98.5

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