ASTROSAT CZTI

Data Quality Report

Orbit 37532

Creation date: 2024-06-27T21:41:08.352074
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/AS1A09_061T01_9000005330_37532cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37532cztM0_level2_quad_clean.evt
Size (bytes)2,924,994,240320,935,680
Size2.7 GB 306.1 MB
Events in quadrant A17,339,1821,946,285
Events in quadrant B17,755,8941,964,188
Events in quadrant C17,222,0391,934,652
Events in quadrant D34,133,7261,695,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06480
B06480
C06480
D06480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07051510
B0726827
C0698897
D01227267

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A316881920.605908%
B316886372.010225%
C316882520.795254%
D31688659020.796516%

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 44290 31695 141 141 0.32% 0.44%
B 44290 31695 448 448 1.01% 1.41%
C 44290 31695 238 238 0.54% 0.75%
D 44289 31692 6487 6487 14.65% 20.47%

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 1605657 2153.28 3664 3588 744.0
A 15 222 535807 715.34 3664 3588 744.0
A 13 248 395298 526.48 3664 3588 744.0
B 5 172 1748618 2523.77 3635 3542 691.5
B 0 229 378110 541.71 3635 3542 691.5
B 0 213 357515 511.92 3635 3542 691.5
C 15 214 1362830 1624.76 3568 3587 836.6
C 14 254 1207228 1438.76 3568 3587 836.6
C 0 10 299372 353.56 3568 3587 836.6
D 12 227 12511830 15898.7 3195 3103 786.8
D 12 233 3753500 4766.79 3195 3103 786.8
D 2 249 2071288 2628.68 3195 3103 786.8

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