ASTROSAT CZTI

Data Quality Report

Orbit 21207

Creation date: 2024-06-27T18:24:56.788282
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/AS1A06_002T01_9000003134_21207cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21207cztM0_level2_quad_clean.evt
Size (bytes)607,504,32089,196,480
Size579.4 MB 85.1 MB
Events in quadrant A5,924,332541,098
Events in quadrant B3,885,604604,246
Events in quadrant C3,175,707583,851
Events in quadrant D4,981,749527,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217822
B0156642
C0134882
D0191102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636294514.853820%
B63622223.489469%
C6361841.320547%
D63614927.734633%

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 7542 6364 878 878 11.64% 13.80%
B 7542 6364 166 166 2.20% 2.61%
C 7541 6362 16 16 0.21% 0.25%
D 7541 6363 423 423 5.61% 6.65%

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 15 236 3023225 20032.4 749 733 150.9
A 11 47 8458 51.2 749 733 150.9
A 13 254 7242 43.14 749 733 150.9
B 0 182 708448 4711.0 794 776 150.2
B 0 197 28819 186.68 794 776 150.2
B 15 35 18446 117.63 794 776 150.2
C 14 238 120293 672.5 759 764 177.7
C 0 10 54975 305.0 759 764 177.7
C 0 207 26755 146.23 759 764 177.7
D 7 238 1470880 8205.56 731 711 179.2
D 13 153 204550 1137.7 731 711 179.2
D 1 20 177406 986.2 731 711 179.2

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