ASTROSAT CZTI

Data Quality Report

Orbit 40840

Creation date: 2024-06-27T22:21:11.237225
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_104T02_9000005572_40840cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40840cztM0_level2_quad_clean.evt
Size (bytes)386,280,00089,066,880
Size368.4 MB 84.9 MB
Events in quadrant A3,199,696601,498
Events in quadrant B2,494,105621,989
Events in quadrant C3,084,445579,372
Events in quadrant D5,095,669511,954

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127863
B0112472
C0125942
D0189932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5463450.823723%
B546390.164745%
C54631312.397950%
D54634438.109098%

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 9438 5465 28 28 0.30% 0.51%
B 9438 5465 3 3 0.03% 0.05%
C 9438 5465 119 119 1.26% 2.18%
D 9438 5465 446 446 4.73% 8.16%

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 510023 4087.48 606 593 124.6
A 13 248 229319 1835.21 606 593 124.6
A 12 189 67089 533.54 606 593 124.6
B 5 255 67518 568.51 603 585 117.7
B 4 171 51714 434.28 603 585 117.7
B 12 111 15213 124.24 603 585 117.7
C 14 254 422873 3080.53 583 587 137.1
C 15 214 233240 1697.18 583 587 137.1
C 0 10 138801 1008.26 583 587 137.1
D 12 79 1473303 10324.63 572 554 142.6
D 13 249 981882 6879.55 572 554 142.6
D 5 222 136270 951.43 572 554 142.6

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