ASTROSAT CZTI

Data Quality Report

Orbit 23914

Creation date: 2024-06-27T19:00:01.889998
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_142T01_9000003540_23914cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23914cztM0_level2_quad_clean.evt
Size (bytes)500,693,76078,327,360
Size477.5 MB 74.7 MB
Events in quadrant A3,335,935497,327
Events in quadrant B3,541,121502,946
Events in quadrant C3,429,371468,857
Events in quadrant D4,426,354459,738

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137302
B0143892
C0138862
D0175822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63451151.812451%
B63451552.442868%
C63451953.073286%
D63451251.970055%

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 7485 6346 0 0 0.00% 0.00%
B 7485 6346 4 4 0.05% 0.06%
C 7485 6346 11 11 0.15% 0.17%
D 7485 6346 25 25 0.33% 0.39%

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 10491 56.12 865 850 171.8
A 0 226 7683 39.77 865 850 171.8
A 3 137 7035 36.0 865 850 171.8
B 15 33 154111 962.04 857 840 159.3
B 12 111 17951 107.4 857 840 159.3
B 11 111 15837 94.13 857 840 159.3
C 14 238 130045 696.28 807 815 185.6
C 0 10 100211 535.54 807 815 185.6
C 7 247 53729 285.1 807 815 185.6
D 8 195 920503 4602.58 827 805 199.8
D 1 52 187592 934.76 827 805 199.8
D 12 218 104058 516.72 827 805 199.8

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