ASTROSAT CZTI

Data Quality Report

Orbit 37664

Creation date: 2024-06-27T21:42:49.608262
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_075T01_9000005342_37664cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37664cztM0_level2_quad_clean.evt
Size (bytes)495,849,60078,212,160
Size472.9 MB 74.6 MB
Events in quadrant A3,652,543491,757
Events in quadrant B3,279,846519,050
Events in quadrant C2,958,476517,148
Events in quadrant D4,776,019478,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141613
B0130672
C0119572
D0179222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51652524.878993%
B51652144.143272%
C5165430.832527%
D51651623.136496%

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 8990 5167 234 234 2.60% 4.53%
B 8990 5165 143 143 1.59% 2.77%
C 8990 5165 31 31 0.34% 0.60%
D 8990 5165 161 161 1.79% 3.12%

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 586465 4607.95 644 634 127.1
A 10 83 312318 2451.6 644 634 127.1
A 9 143 119291 933.32 644 634 127.1
B 5 172 533741 4358.63 647 631 122.3
B 0 230 88344 717.13 647 631 122.3
B 0 189 29496 236.0 647 631 122.3
C 15 214 238085 1613.68 646 651 147.1
C 0 10 124549 842.05 646 651 147.1
C 12 250 66315 446.28 646 651 147.1
D 12 227 1803079 11679.48 640 623 154.3
D 12 233 148005 955.0 640 623 154.3
D 2 249 96452 620.95 640 623 154.3

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