ASTROSAT CZTI

Data Quality Report

Orbit 24927

Creation date: 2024-06-27T19:11:33.065366
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_205T01_9000003652_24927cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24927cztM0_level2_quad_clean.evt
Size (bytes)515,439,360143,559,360
Size491.6 MB 136.9 MB
Events in quadrant A3,304,447986,092
Events in quadrant B3,448,489999,464
Events in quadrant C4,588,692955,448
Events in quadrant D3,819,862946,172

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137722
B0142262
C0177592
D0155082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609420.635497%
B6610831.255673%
C66102784.205749%
D6610891.346445%

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 9159 6612 0 0 0.00% 0.00%
B 9160 6613 1 1 0.01% 0.02%
C 9160 6613 7 7 0.08% 0.11%
D 9160 6613 30 30 0.33% 0.45%

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 13 254 10606 57.8 855 841 169.0
A 0 226 7376 38.68 855 841 169.0
A 3 137 7182 37.53 855 841 169.0
B 4 216 30395 188.77 849 829 156.6
B 0 230 20722 127.01 849 829 156.6
B 0 189 19724 120.64 849 829 156.6
C 7 247 1180012 6163.67 832 835 191.3
C 14 238 135990 706.47 832 835 191.3
C 2 16 23282 117.33 832 835 191.3
D 8 195 408527 2015.12 845 823 202.3
D 1 52 174328 857.57 845 823 202.3
D 2 153 34234 165.14 845 823 202.3

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