ASTROSAT CZTI

Data Quality Report

Orbit 30634

Creation date: 2024-06-27T20:17:58.270803
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/AS1A10_055T01_9000004414_30634cztM0_level2.evt modeM0/AS1A10_055T01_9000004414_30634cztM0_level2_quad_clean.evt
Size (bytes)785,770,560108,596,160
Size749.4 MB 103.6 MB
Events in quadrant A3,835,063728,348
Events in quadrant B5,936,726721,212
Events in quadrant C3,754,627689,669
Events in quadrant D9,762,460624,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161991
B0231391
C0160271
D0342661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75431001.325732%
B75441772.346235%
C75441171.550901%
D7543118315.683415%

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 7678 7545 26 26 0.34% 0.34%
B 7679 7546 12 12 0.16% 0.16%
C 7679 7546 2 2 0.03% 0.03%
D 7678 7545 1339 1339 17.44% 17.75%

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 0 13 201440 1058.72 939 921 189.4
A 13 254 14665 72.57 939 921 189.4
A 3 137 9241 43.93 939 921 189.4
B 6 159 2118895 12004.15 922 898 176.4
B 6 36 80573 451.57 922 898 176.4
B 0 229 61374 342.76 922 898 176.4
C 14 238 140970 674.96 882 888 207.5
C 3 233 88491 422.1 882 888 207.5
C 10 22 51276 242.79 882 888 207.5
D 8 195 5763334 28442.91 860 837 202.6
D 12 218 297320 1463.4 860 837 202.6
D 13 249 222368 1093.44 860 837 202.6

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