ASTROSAT CZTI

Data Quality Report

Orbit 35261

Creation date: 2022-04-06T14:48:44.623035
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/AS1A11_047T09_9000005054_35261cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35261cztM0_level2_quad_clean.evt
Size (bytes)604,379,52064,002,240
Size576.4 MB 61.0 MB
Events in quadrant A2,777,953431,157
Events in quadrant B7,221,810362,709
Events in quadrant C3,243,346418,528
Events in quadrant D4,718,297369,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111483
B0250432
C0124792
D0172172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506050.098814%
B5060170633.715415%
C50601693.339921%
D506051810.237154%

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 7093 5061 0 0 0.00% 0.00%
B 7093 5061 1205 1205 16.99% 23.81%
C 7093 5061 133 133 1.88% 2.63%
D 7093 5061 497 497 7.01% 9.82%

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 95858 702.03 682 672 135.6
A 7 16 19541 139.16 682 672 135.6
A 13 6 15968 112.81 682 672 135.6
B 5 236 4044494 36421.07 592 580 111.0
B 5 172 805409 7248.61 592 580 111.0
B 12 111 13214 113.79 592 580 111.0
C 0 10 307244 2088.03 637 642 146.8
C 15 214 214410 1455.81 637 642 146.8
C 10 49 183515 1245.41 637 642 146.8
D 7 80 1795496 11729.65 631 616 153.0
D 12 233 209284 1363.66 631 616 153.0
D 8 195 88229 572.56 631 616 153.0

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