ASTROSAT CZTI

Data Quality Report

Orbit 18713

Creation date: 2024-06-27T17:53:49.233947
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/AS1A05_165T07_9000002796_18713cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18713cztM0_level2_quad_clean.evt
Size (bytes)479,136,96074,413,440
Size456.9 MB 71.0 MB
Events in quadrant A3,296,143458,830
Events in quadrant B3,437,157466,731
Events in quadrant C4,077,231445,601
Events in quadrant D3,269,017438,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137882
B0141722
C0164802
D0139882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347821.291949%
B63471131.780369%
C63471372.158500%
D6347991.559792%

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 7502 6347 4 4 0.05% 0.06%
B 7502 6347 22 22 0.29% 0.35%
C 7502 6347 0 0 0.00% 0.00%
D 7502 6347 27 27 0.36% 0.43%

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 9 143 34715 203.11 838 822 166.9
A 14 111 18466 105.73 838 822 166.9
A 13 254 8562 46.38 838 822 166.9
B 3 64 107733 678.28 832 812 157.6
B 0 230 36614 227.12 832 812 157.6
B 12 111 18410 111.64 832 812 157.6
C 3 233 802832 4310.62 807 816 186.1
C 14 238 125638 670.89 807 816 186.1
C 13 61 5490 25.12 807 816 186.1
D 7 238 93522 470.95 819 796 196.9
D 2 234 25075 123.31 819 796 196.9
D 13 104 23916 117.42 819 796 196.9

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