ASTROSAT CZTI

Data Quality Report

Orbit 18415

Creation date: 2024-06-27T17:49:28.325541
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/AS1A05_227T06_9000002730_18415cztM0_level2.evt modeM0/AS1A05_227T06_9000002730_18415cztM0_level2_quad_clean.evt
Size (bytes)277,162,56061,228,800
Size264.3 MB 58.4 MB
Events in quadrant A2,106,531398,569
Events in quadrant B1,975,835408,651
Events in quadrant C1,924,046387,168
Events in quadrant D2,116,158379,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088460
B083710
C082840
D087630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39741092.742828%
B3975210.528302%
C3975210.528302%
D3975110.276730%

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 3974 3974 78 78 1.96% 1.96%
B 3975 3975 14 14 0.35% 0.35%
C 3975 3975 0 0 0.00% 0.00%
D 3975 3975 10 10 0.25% 0.25%

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 273090 2881.0 463 453 94.6
A 4 2 51708 541.62 463 453 94.6
A 0 226 4177 39.35 463 453 94.6
B 7 220 94552 1040.99 466 455 90.4
B 0 189 21877 236.99 466 455 90.4
B 0 245 10909 115.65 466 455 90.4
C 3 233 125900 1203.82 443 446 104.2
C 14 238 69579 663.38 443 446 104.2
C 13 61 3170 26.14 443 446 104.2
D 8 230 168791 1523.59 451 438 110.5
D 1 52 144071 1299.88 451 438 110.5
D 13 232 30222 269.54 451 438 110.5

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