ASTROSAT CZTI

Data Quality Report

Orbit 41750

Creation date: 2024-06-27T22:32:24.166504
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_077T11_9000005696_41750cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41750cztM0_level2_quad_clean.evt
Size (bytes)364,078,08093,686,400
Size347.2 MB 89.3 MB
Events in quadrant A2,994,952654,734
Events in quadrant B2,562,431664,747
Events in quadrant C3,424,449589,371
Events in quadrant D4,091,789564,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119992
B0107782
C0131472
D0155913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5185180.347155%
B518560.115718%
C51852865.515911%
D51841913.684414%

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 7308 5186 3 3 0.04% 0.06%
B 7307 5184 1 1 0.01% 0.02%
C 7307 5184 277 277 3.79% 5.34%
D 7306 5183 197 197 2.70% 3.80%

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 531984 4138.82 626 615 128.4
A 2 79 27896 212.49 626 615 128.4
A 13 254 8294 59.81 626 615 128.4
B 0 186 51629 430.61 612 596 118.5
B 0 245 30494 252.28 612 596 118.5
B 15 35 30272 250.4 612 596 118.5
C 0 10 948807 7068.62 576 582 134.1
C 15 214 221557 1647.28 576 582 134.1
C 7 220 3873 24.53 576 582 134.1
D 12 79 806880 5491.61 599 583 146.8
D 2 120 265455 1804.02 599 583 146.8
D 2 249 262589 1784.5 599 583 146.8

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