ASTROSAT CZTI

Data Quality Report

Orbit 25334

Creation date: 2024-06-27T19:16:29.705347
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/AS1A09_059T01_9000003706_25334cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25334cztM0_level2_quad_clean.evt
Size (bytes)539,447,04098,953,920
Size514.5 MB 94.4 MB
Events in quadrant A3,912,613650,955
Events in quadrant B3,227,992652,105
Events in quadrant C3,278,349625,188
Events in quadrant D5,461,734599,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165830
B0138730
C0138860
D0208160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6729650.965968%
B6730741.099554%
C67301071.589896%
D67303194.739970%

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 7309 6730 0 0 0.00% 0.00%
B 7310 6731 0 0 0.00% 0.00%
C 7310 6731 0 0 0.00% 0.00%
D 7310 6731 196 196 2.68% 2.91%

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 15 173 697247 4174.04 832 815 166.8
A 13 254 11438 63.67 832 815 166.8
A 3 137 7605 40.7 832 815 166.8
B 12 111 19038 115.78 822 801 157.5
B 11 111 16745 101.22 822 801 157.5
B 14 111 14908 89.56 822 801 157.5
C 14 238 128411 680.11 803 805 187.6
C 2 16 11143 55.1 803 805 187.6
C 0 207 5547 25.27 803 805 187.6
D 12 235 1208763 6183.89 804 781 195.3
D 1 52 601862 3077.04 804 781 195.3
D 8 195 409244 2091.0 804 781 195.3

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