ASTROSAT CZTI

Data Quality Report

Orbit 25672

Creation date: 2024-06-27T19:20:15.762767
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/AS1A09_043T01_9000003744_25672cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25672cztM0_level2_quad_clean.evt
Size (bytes)295,784,64042,382,080
Size282.1 MB 40.4 MB
Events in quadrant A2,509,658259,886
Events in quadrant B1,917,675263,626
Events in quadrant C1,887,945248,049
Events in quadrant D2,385,396244,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107190
B079430
C078670
D098080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3776431.138771%
B3776401.059322%
C3775651.721854%
D3775310.821192%

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 4611 3776 0 0 0.00% 0.00%
B 4611 3777 2 2 0.04% 0.05%
C 4610 3776 0 0 0.00% 0.00%
D 4610 3776 7 7 0.15% 0.19%

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 8 192 644901 6480.99 483 472 99.4
A 13 254 5258 48.13 483 472 99.4
A 3 137 4562 41.13 483 472 99.4
B 0 190 12142 124.64 478 465 93.7
B 12 111 11559 118.41 478 465 93.7
B 0 245 11354 116.23 478 465 93.7
C 14 238 72788 658.36 461 464 109.9
C 3 233 16705 147.84 461 464 109.9
C 13 61 3213 25.02 461 464 109.9
D 8 195 425561 3720.77 466 453 114.3
D 2 244 90487 788.02 466 453 114.3
D 1 52 46213 400.52 466 453 114.3

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