ASTROSAT CZTI

Data Quality Report

Orbit 23494

Creation date: 2024-06-27T18:55:11.719330
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_100T02_9000003476_23494cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23494cztM0_level2_quad_clean.evt
Size (bytes)479,450,880104,408,640
Size457.2 MB 99.6 MB
Events in quadrant A3,103,923695,143
Events in quadrant B3,384,721706,275
Events in quadrant C3,679,270673,490
Events in quadrant D3,934,571657,440

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127701
B0136111
C0146581
D0155651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6151490.796618%
B6151641.040481%
C61511562.536173%
D61511792.910096%

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 7346 6151 0 0 0.00% 0.00%
B 7346 6152 4 4 0.05% 0.07%
C 7346 6151 14 14 0.19% 0.23%
D 7346 6152 136 136 1.85% 2.21%

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 13 254 10401 60.48 800 785 159.0
A 15 174 6884 38.36 800 785 159.0
A 0 226 6833 38.04 800 785 159.0
B 0 189 147750 1009.93 791 772 145.5
B 0 229 28018 187.22 791 772 145.5
B 15 33 22399 148.61 791 772 145.5
C 8 208 298657 1676.84 773 781 177.6
C 14 238 125057 699.59 773 781 177.6
C 2 16 116590 651.93 773 781 177.6
D 1 52 797816 4254.41 781 759 187.3
D 13 172 63875 336.89 781 759 187.3
D 12 233 44022 230.92 781 759 187.3

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