ASTROSAT CZTI

Data Quality Report

Orbit 25903

Creation date: 2024-06-27T19:22:37.520144
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/AS1A07_068T01_9000003756_25903cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25903cztM0_level2_quad_clean.evt
Size (bytes)394,571,52056,482,560
Size376.3 MB 53.9 MB
Events in quadrant A4,757,831309,518
Events in quadrant B2,298,683363,276
Events in quadrant C2,283,475346,358
Events in quadrant D2,276,888347,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175190
B0100560
C0100390
D0102770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489377115.757204%
B4894460.939926%
C4894681.389456%
D4894300.612996%

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 5328 4894 651 651 12.22% 13.30%
B 5329 4895 2 2 0.04% 0.04%
C 5329 4895 0 0 0.00% 0.00%
D 5329 4895 14 14 0.26% 0.29%

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 0 13 2655764 23990.16 544 533 110.7
A 13 254 6095 50.25 544 533 110.7
A 3 137 5179 41.98 544 533 110.7
B 12 111 14044 119.51 580 565 112.8
B 11 111 12841 108.85 580 565 112.8
B 14 111 11616 97.98 580 565 112.8
C 14 238 89013 662.23 558 560 133.6
C 3 233 22245 162.35 558 560 133.6
C 13 61 3926 25.2 558 560 133.6
D 1 52 86838 629.88 566 550 137.0
D 2 234 21567 153.42 566 550 137.0
D 7 238 17403 123.02 566 550 137.0

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