ASTROSAT CZTI

Data Quality Report

Orbit 40955

Creation date: 2024-06-27T22:22:40.370516
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_052T04_9000005582_40955cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40955cztM0_level2_quad_clean.evt
Size (bytes)276,949,44083,563,200
Size264.1 MB 79.7 MB
Events in quadrant A2,643,149572,402
Events in quadrant B2,112,478580,930
Events in quadrant C2,402,958539,258
Events in quadrant D2,711,190494,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108443
B097972
C0102262
D0115942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4893130.265686%
B489350.102187%
C4893400.817494%
D48931473.004292%

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 6985 4894 5 5 0.07% 0.10%
B 6985 4894 0 0 0.00% 0.00%
C 6985 4894 31 31 0.44% 0.63%
D 6985 4894 132 132 1.89% 2.70%

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 462414 4226.78 537 527 109.3
A 12 189 93476 850.59 537 527 109.3
A 13 254 7695 65.6 537 527 109.3
B 3 112 13950 128.98 534 519 104.1
B 12 111 12957 119.44 534 519 104.1
B 11 111 11847 108.78 534 519 104.1
C 15 214 227539 1854.17 522 526 122.4
C 0 10 124476 1012.39 522 526 122.4
C 12 249 10157 78.66 522 526 122.4
D 2 249 397136 3147.43 515 500 126.0
D 13 249 166166 1314.61 515 500 126.0
D 12 16 87561 690.86 515 500 126.0

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