ASTROSAT CZTI

Data Quality Report

Orbit 31240

Creation date: 2024-06-27T20:25:28.916681
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/AS1A10_073T02_9000004522_31240cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31240cztM0_level2_quad_clean.evt
Size (bytes)429,865,92060,050,880
Size410.0 MB 57.3 MB
Events in quadrant A2,365,938388,219
Events in quadrant B3,676,713381,540
Events in quadrant C2,764,118364,620
Events in quadrant D3,899,800360,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099031
B0142221
C0111241
D0149491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4595831.806311%
B45951653.590860%
C45952535.505985%
D45951974.287269%

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 5330 4597 19 19 0.36% 0.41%
B 5330 4597 11 11 0.21% 0.24%
C 5330 4597 104 104 1.95% 2.26%
D 5330 4597 53 53 0.99% 1.15%

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 5 16 116750 977.47 582 571 118.9
A 13 254 9690 76.72 582 571 118.9
A 3 137 5853 44.44 582 571 118.9
B 6 159 1290109 11485.39 572 557 112.3
B 0 190 63417 559.86 572 557 112.3
B 0 155 32692 286.21 572 557 112.3
C 3 233 427680 3279.38 550 552 130.2
C 14 238 91465 698.01 550 552 130.2
C 0 10 80141 611.06 550 552 130.2
D 8 195 1696485 12418.61 554 541 136.6
D 2 250 50733 367.53 554 541 136.6
D 2 234 20788 148.26 554 541 136.6

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