ASTROSAT CZTI

Data Quality Report

Orbit 19671

Creation date: 2024-06-27T18:05:37.324133
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/AS1T03_037T01_9000002930_19671cztM0_level2.evt modeM0/AS1T03_037T01_9000002930_19671cztM0_level2_quad_clean.evt
Size (bytes)472,078,080116,576,640
Size450.2 MB 111.2 MB
Events in quadrant A3,221,588774,017
Events in quadrant B3,335,443803,508
Events in quadrant C3,606,133767,793
Events in quadrant D3,703,191743,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133573
B0136672
C0146172
D0150062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342520.819931%
B6342620.977610%
C63421241.955219%
D63421352.128666%

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 7667 6343 2 2 0.03% 0.03%
B 7667 6343 0 0 0.00% 0.00%
C 7667 6342 2 2 0.03% 0.03%
D 7667 6342 81 81 1.06% 1.28%

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 11 29 33522 200.63 821 805 163.1
A 5 16 27790 165.48 821 805 163.1
A 0 226 7018 38.1 821 805 163.1
B 3 112 25800 163.11 829 808 153.2
B 0 198 25228 159.38 829 808 153.2
B 4 216 24368 153.76 829 808 153.2
C 3 233 210546 1113.65 814 822 188.3
C 14 238 129180 681.59 814 822 188.3
C 9 221 73238 384.53 814 822 188.3
D 12 218 399837 2069.25 811 791 192.8
D 1 20 130371 671.94 811 791 192.8
D 1 52 49197 251.01 811 791 192.8

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