ASTROSAT CZTI

Data Quality Report

Orbit 12308

Creation date: 2024-06-27T16:25:16.431350
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/AS1A04_183T02_9000001816_12308cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12308cztM0_level2_quad_clean.evt
Size (bytes)588,752,64099,452,160
Size561.5 MB 94.8 MB
Events in quadrant A4,251,975624,499
Events in quadrant B4,288,230629,182
Events in quadrant C3,558,304638,985
Events in quadrant D5,217,987591,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175783
B0177162
C0158402
D0204392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75772182.877128%
B75772973.919757%
C7577700.923848%
D75774736.242576%

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 7823 7579 3 3 0.04% 0.04%
B 7823 7579 61 61 0.78% 0.80%
C 7823 7579 2 2 0.03% 0.03%
D 7823 7579 309 309 3.95% 4.08%

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 1 162 223300 1160.24 924 905 191.7
A 1 178 129211 669.38 924 905 191.7
A 1 161 111213 575.48 924 905 191.7
B 4 239 450467 2513.16 917 892 178.9
B 0 190 47721 261.78 917 892 178.9
B 0 205 34456 187.63 917 892 178.9
C 4 254 40440 186.17 900 904 212.4
C 14 234 8272 34.69 900 904 212.4
C 13 61 6697 27.28 900 904 212.4
D 1 52 1100974 5221.67 876 852 210.7
D 5 222 401779 1902.98 876 852 210.7
D 8 195 88219 414.68 876 852 210.7

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