ASTROSAT CZTI

Data Quality Report

Orbit 40812

Creation date: 2024-06-27T22:20:50.229362
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_099T03_9000005570_40812cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40812cztM0_level2_quad_clean.evt
Size (bytes)329,987,52096,537,600
Size314.7 MB 92.1 MB
Events in quadrant A3,109,528642,844
Events in quadrant B2,725,981667,490
Events in quadrant C2,801,449632,927
Events in quadrant D3,122,521571,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126073
B0120512
C0119592
D0135302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5846120.205269%
B5846180.307903%
C5846200.342114%
D58461041.778994%

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 9282 5848 5 5 0.05% 0.09%
B 9282 5848 2 2 0.02% 0.03%
C 9282 5848 11 11 0.12% 0.19%
D 9282 5848 94 94 1.01% 1.61%

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 546086 4097.25 646 631 133.1
A 12 189 44563 330.0 646 631 133.1
A 2 79 9386 65.76 646 631 133.1
B 0 190 113701 895.97 643 625 126.2
B 7 202 37927 295.57 643 625 126.2
B 0 230 18667 142.96 643 625 126.2
C 15 214 253203 1718.28 629 632 147.0
C 0 10 56412 379.48 629 632 147.0
C 14 254 29291 194.97 629 632 147.0
D 2 249 224506 1476.13 623 603 151.7
D 2 153 176550 1159.97 623 603 151.7
D 12 233 153836 1010.22 623 603 151.7

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