ASTROSAT CZTI

Data Quality Report

Orbit 16002

Creation date: 2024-06-27T17:16:37.936968
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/AS1G08_046T09_9000002362_16002cztM0_level2.evt modeM0/AS1G08_046T09_9000002362_16002cztM0_level2_quad_clean.evt
Size (bytes)1,127,269,440177,448,320
Size1.0 GB 169.2 MB
Events in quadrant A8,012,0571,115,074
Events in quadrant B6,782,5981,151,021
Events in quadrant C6,610,7921,107,445
Events in quadrant D11,814,0481,059,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329254
B0287723
C0279173
D0445093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136255644.139450%
B136252221.629358%
C136252211.622018%
D1362511778.638532%

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 15261 13628 357 357 2.34% 2.62%
B 15261 13628 31 31 0.20% 0.23%
C 15261 13628 1 1 0.01% 0.01%
D 15261 13627 1011 1011 6.62% 7.42%

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 10 253 1649739 5157.13 1599 1564 319.6
A 13 210 183402 568.97 1599 1564 319.6
A 0 226 14088 39.19 1599 1564 319.6
B 7 220 193976 623.36 1614 1569 308.7
B 10 245 54750 172.29 1614 1569 308.7
B 4 216 44424 138.84 1614 1569 308.7
C 3 233 300042 826.62 1550 1558 361.1
C 14 238 238355 655.79 1550 1558 361.1
C 8 128 11636 27.91 1550 1558 361.1
D 4 239 5458420 14414.59 1544 1495 378.6
D 12 218 275753 724.46 1544 1495 378.6
D 2 152 76828 198.99 1544 1495 378.6

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