ASTROSAT CZTI

Data Quality Report

Orbit 17486

Creation date: 2024-06-27T17:37:18.360601
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/AS1T03_051T01_9000002588_17486cztM0_level2.evt modeM0/AS1T03_051T01_9000002588_17486cztM0_level2_quad_clean.evt
Size (bytes)378,987,84032,054,400
Size361.4 MB 30.6 MB
Events in quadrant A1,788,450193,496
Events in quadrant B2,109,978194,763
Events in quadrant C1,799,176185,656
Events in quadrant D5,546,871152,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072990
B083950
C073290
D0188890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A342730.087540%
B3427481.400642%
C3428160.466744%
D3428130838.156359%

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 3427 3427 0 0 0.00% 0.00%
B 3427 3427 30 30 0.88% 0.88%
C 3428 3428 0 0 0.00% 0.00%
D 3428 3428 1253 1253 36.55% 36.55%

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 15 174 7279 73.05 463 456 93.4
A 0 226 4264 40.77 463 456 93.4
A 12 194 3538 33.0 463 456 93.4
B 12 17 152618 1790.4 452 443 85.0
B 7 220 94975 1112.21 452 443 85.0
B 4 216 39406 458.42 452 443 85.0
C 14 238 69271 679.0 437 442 101.4
C 3 233 14223 135.95 437 442 101.4
C 5 218 9012 84.54 437 442 101.4
D 1 52 3562094 38904.3 373 363 91.6
D 5 222 253057 2760.14 373 363 91.6
D 13 189 128503 1399.66 373 363 91.6

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