ASTROSAT CZTI

Data Quality Report

Orbit 24439

Creation date: 2024-06-27T19:06:03.125203
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_183T01_9000003606_24439cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24439cztM0_level2_quad_clean.evt
Size (bytes)529,822,080103,936,320
Size505.3 MB 99.1 MB
Events in quadrant A3,249,870678,555
Events in quadrant B3,395,399694,927
Events in quadrant C3,640,589656,577
Events in quadrant D5,270,452615,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146601
B0148671
C0152781
D0203671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7208751.040511%
B7209971.345540%
C72091041.442641%
D72095227.240949%

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 7603 7209 0 0 0.00% 0.00%
B 7604 7210 5 5 0.07% 0.07%
C 7604 7210 2 2 0.03% 0.03%
D 7604 7210 354 354 4.66% 4.91%

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 4 2 14082 78.51 839 819 168.9
A 13 254 11568 63.63 839 819 168.9
A 3 137 7843 41.58 839 819 168.9
B 3 64 87532 541.04 841 818 160.3
B 12 111 19900 119.06 841 818 160.3
B 11 111 17776 105.81 841 818 160.3
C 10 9 266721 1391.21 816 820 191.1
C 14 238 129530 673.42 816 820 191.1
C 3 233 29470 149.9 816 820 191.1
D 10 199 890593 4595.16 799 774 193.6
D 1 52 685791 3537.53 799 774 193.6
D 12 218 337016 1736.4 799 774 193.6

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