ASTROSAT CZTI

Data Quality Report

Orbit 23018

Creation date: 2024-06-27T18:48:51.927978
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/AS1C05_004T01_9000003404_23018cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23018cztM0_level2_quad_clean.evt
Size (bytes)484,822,080108,083,520
Size462.4 MB 103.1 MB
Events in quadrant A3,329,126701,349
Events in quadrant B3,578,287712,115
Events in quadrant C3,398,298685,392
Events in quadrant D3,882,431667,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148612
B0153992
C0149452
D0165572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7282771.057402%
B72821582.169734%
C72821141.565504%
D7282981.345784%

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 7747 7283 0 0 0.00% 0.00%
B 7747 7283 28 28 0.36% 0.38%
C 7747 7283 0 0 0.00% 0.00%
D 7747 7283 45 45 0.58% 0.62%

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 10012 52.88 863 842 173.4
A 3 137 7602 38.98 863 842 173.4
A 0 226 7221 36.79 863 842 173.4
B 4 216 136901 828.61 860 838 164.2
B 0 189 39438 235.07 860 838 164.2
B 12 111 20084 117.21 860 838 164.2
C 14 238 131411 679.81 826 830 192.1
C 10 9 18768 93.38 826 830 192.1
C 7 247 17497 86.77 826 830 192.1
D 1 52 302172 1475.37 834 805 204.3
D 13 174 119471 580.94 834 805 204.3
D 13 153 111017 539.55 834 805 204.3

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