ASTROSAT CZTI

Data Quality Report

Orbit 24329

Creation date: 2024-06-27T19:04:49.071680
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_145T01_9000003594_24329cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24329cztM0_level2_quad_clean.evt
Size (bytes)583,335,36091,396,800
Size556.3 MB 87.2 MB
Events in quadrant A3,019,129596,391
Events in quadrant B3,094,225615,352
Events in quadrant C4,979,825575,612
Events in quadrant D6,156,642550,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130581
B0131901
C0191471
D0224591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6155410.666125%
B6156681.104613%
C61564176.773879%
D6156102416.634178%

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 7275 6155 0 0 0.00% 0.00%
B 7276 6156 4 4 0.05% 0.06%
C 7276 6156 226 226 3.11% 3.67%
D 7276 6156 837 837 11.50% 13.60%

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 9087 53.38 779 764 155.9
A 2 79 7255 41.63 779 764 155.9
A 3 137 6963 39.76 779 764 155.9
B 12 111 17674 113.61 784 765 148.8
B 11 111 15626 99.85 784 765 148.8
B 5 172 14896 94.95 784 765 148.8
C 2 16 1071070 6124.4 753 759 174.8
C 7 247 848692 4851.94 753 759 174.8
C 14 238 118369 672.97 753 759 174.8
D 1 52 1901880 10963.15 717 698 173.4
D 12 218 687720 3961.71 717 698 173.4
D 1 239 315510 1815.36 717 698 173.4

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