ASTROSAT CZTI

Data Quality Report

Orbit 21145

Creation date: 2024-06-27T18:24:06.468939
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_136T01_9000003124_21145cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21145cztM0_level2_quad_clean.evt
Size (bytes)539,801,28097,493,760
Size514.8 MB 93.0 MB
Events in quadrant A3,229,857658,436
Events in quadrant B3,523,403663,264
Events in quadrant C3,196,346627,057
Events in quadrant D5,967,425559,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138002
B0147262
C0136173
D0220912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354610.960025%
B6354861.353478%
C6353931.463875%
D635371411.238785%

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 7604 6355 0 0 0.00% 0.00%
B 7604 6355 11 11 0.14% 0.17%
C 7603 6354 2 2 0.03% 0.03%
D 7603 6354 669 669 8.80% 10.53%

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 6 11035 61.1 833 819 167.2
A 13 254 8607 46.58 833 819 167.2
A 0 226 7458 39.71 833 819 167.2
B 0 230 59375 379.73 827 810 154.2
B 0 228 53052 338.73 827 810 154.2
B 3 64 52221 333.34 827 810 154.2
C 14 238 123820 681.22 780 787 180.6
C 0 10 25703 137.96 780 787 180.6
C 13 61 5654 26.95 780 787 180.6
D 1 52 2268736 12241.15 761 737 185.3
D 9 65 226905 1220.7 761 737 185.3
D 5 222 153567 824.87 761 737 185.3

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