ASTROSAT CZTI

Data Quality Report

Orbit 25658

Creation date: 2024-06-27T19:20:06.480250
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_006T05_9000003736_25658cztM0_level2.evt modeM0/AS1A09_006T05_9000003736_25658cztM0_level2_quad_clean.evt
Size (bytes)510,249,60087,727,680
Size486.6 MB 83.7 MB
Events in quadrant A3,212,798572,940
Events in quadrant B3,143,228577,408
Events in quadrant C3,298,121543,822
Events in quadrant D5,360,476511,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135520
B0134060
C0140110
D0203140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6464380.587871%
B6465410.634184%
C64651041.608662%
D64644597.100866%

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 7379 6465 0 0 0.00% 0.00%
B 7380 6466 1 1 0.01% 0.02%
C 7380 6466 6 6 0.08% 0.09%
D 7378 6464 411 411 5.57% 6.36%

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 155538 967.76 791 773 159.9
A 13 254 10509 60.88 791 773 159.9
A 3 137 7284 40.71 791 773 159.9
B 0 245 31847 205.16 783 764 151.5
B 12 111 18468 116.85 783 764 151.5
B 0 190 16678 105.04 783 764 151.5
C 3 233 273641 1557.24 745 748 175.2
C 14 238 118974 674.64 745 748 175.2
C 13 61 5327 26.13 745 748 175.2
D 1 52 2053390 11423.63 742 721 179.7
D 8 195 282606 1568.76 742 721 179.7
D 13 104 176020 975.58 742 721 179.7

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