ASTROSAT CZTI

Data Quality Report

Orbit 39653

Creation date: 2024-06-27T22:07:21.307588
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_018T01_9000005488_39653cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39653cztM0_level2_quad_clean.evt
Size (bytes)568,062,72088,171,200
Size541.7 MB 84.1 MB
Events in quadrant A4,316,276619,527
Events in quadrant B3,008,586617,131
Events in quadrant C8,581,837478,467
Events in quadrant D4,685,457560,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166643
B0130162
C0294562
D0178232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5627520.924116%
B56272033.607606%
C5627157527.990048%
D56272103.732006%

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 7240 5628 15 15 0.21% 0.27%
B 7240 5628 157 157 2.17% 2.79%
C 7240 5628 1714 1714 23.67% 30.45%
D 7240 5628 259 259 3.58% 4.60%

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 15 222 1488320 12269.18 593 580 121.3
A 10 83 454278 3741.58 593 580 121.3
A 9 143 39232 318.76 593 580 121.3
B 5 172 498765 4480.37 580 563 111.2
B 4 251 66717 594.92 580 563 111.2
B 5 255 52378 465.97 580 563 111.2
C 15 208 4575230 36876.11 530 532 124.1
C 9 187 1547468 12469.67 530 532 124.1
C 15 214 215769 1735.0 530 532 124.1
D 12 227 2234228 15648.17 576 561 142.7
D 13 249 100812 702.32 576 561 142.7
D 2 250 50492 349.8 576 561 142.7

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