ASTROSAT CZTI

Data Quality Report

Orbit 40541

Creation date: 2024-06-27T22:17:20.172596
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/AS1A12_011T26_9000005548_40541cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40541cztM0_level2_quad_clean.evt
Size (bytes)571,193,280137,197,440
Size544.7 MB 130.8 MB
Events in quadrant A4,598,258936,434
Events in quadrant B4,420,057958,506
Events in quadrant C4,681,807927,196
Events in quadrant D6,760,638722,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193093
B0191052
C0195812
D0261882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8788300.341375%
B8788180.204825%
C8788360.409650%
D8788155717.717342%

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 11625 8790 24 24 0.21% 0.27%
B 11625 8790 0 0 0.00% 0.00%
C 11625 8790 45 45 0.39% 0.51%
D 11625 8790 628 628 5.40% 7.14%

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 10 83 665690 3440.01 946 926 193.2
A 7 3 161661 831.77 946 926 193.2
A 12 189 74192 379.14 946 926 193.2
B 3 112 608445 3295.22 941 914 184.4
B 7 202 33611 177.35 941 914 184.4
B 0 230 27112 142.1 941 914 184.4
C 14 254 439588 2024.22 922 928 216.7
C 15 214 377265 1736.63 922 928 216.7
C 10 20 255153 1173.13 922 928 216.7
D 2 250 2112591 10246.22 836 814 206.1
D 12 227 606322 2937.89 836 814 206.1
D 12 6 378649 1833.23 836 814 206.1

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