ASTROSAT CZTI

Data Quality Report

Orbit 18539

Creation date: 2024-06-27T17:51:21.456579
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_104T02_9000002752_18539cztM0_level2.evt modeM0/AS1A05_104T02_9000002752_18539cztM0_level2_quad_clean.evt
Size (bytes)516,191,040103,728,960
Size492.3 MB 98.9 MB
Events in quadrant A3,104,963707,027
Events in quadrant B3,270,243707,226
Events in quadrant C3,060,480670,341
Events in quadrant D5,777,194624,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133801
B0137471
C0130541
D0213441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183791.277697%
B61841101.778784%
C6184841.358344%
D618467710.947607%

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 7333 6183 2 2 0.03% 0.03%
B 7334 6184 22 22 0.30% 0.36%
C 7334 6184 0 0 0.00% 0.00%
D 7334 6184 537 537 7.32% 8.68%

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 44588 273.61 794 778 160.1
A 13 254 9790 56.28 794 778 160.1
A 0 226 6998 38.84 794 778 160.1
B 3 64 150208 1011.3 781 763 147.8
B 7 220 17297 111.89 781 763 147.8
B 12 111 16990 109.81 781 763 147.8
C 14 238 119011 677.12 752 759 174.6
C 0 207 8588 44.83 752 759 174.6
C 13 61 5312 26.07 752 759 174.6
D 7 238 1636703 9129.95 742 721 179.2
D 1 52 1230950 6865.55 742 721 179.2
D 7 96 41176 225.77 742 721 179.2

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