ASTROSAT CZTI

Data Quality Report

Orbit 10904

Creation date: 2024-06-27T16:05:28.276440
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_055T02_9000001576_10904cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10904cztM0_level2_quad_clean.evt
Size (bytes)752,564,160102,493,440
Size717.7 MB 97.7 MB
Events in quadrant A6,296,558641,916
Events in quadrant B5,202,883670,366
Events in quadrant C3,398,501671,281
Events in quadrant D7,376,532587,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239784
B0205353
C0156793
D0272543

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76426328.270086%
B76424666.097880%
C7642390.510338%
D7642123816.199948%

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 8082 7646 375 375 4.64% 4.90%
B 8082 7646 252 252 3.12% 3.30%
C 8082 7646 1 1 0.01% 0.01%
D 8082 7646 1092 1092 13.51% 14.28%

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 8 5 1379887 7754.29 870 853 177.8
A 13 251 1291623 7257.99 870 853 177.8
A 0 254 117644 656.71 870 853 177.8
B 4 239 1444475 8458.32 888 866 170.7
B 10 245 91324 530.01 888 866 170.7
B 0 219 33809 193.02 888 866 170.7
C 14 234 12400 56.76 866 870 203.1
C 13 61 6584 28.13 866 870 203.1
C 4 222 5397 22.29 866 870 203.1
D 13 152 2233274 11464.49 803 779 194.7
D 5 222 580478 2976.92 803 779 194.7
D 13 122 483676 2479.81 803 779 194.7

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