ASTROSAT CZTI

Data Quality Report

Orbit 26761

Creation date: 2024-06-27T19:32:32.594829
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/AS1A09_044T02_9000003852_26761cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26761cztM0_level2_quad_clean.evt
Size (bytes)676,252,80052,562,880
Size644.9 MB 50.1 MB
Events in quadrant A3,161,828344,371
Events in quadrant B6,331,649210,470
Events in quadrant C3,382,665329,735
Events in quadrant D7,190,129277,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130590
B0226810
C0137880
D0255700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6126240.391773%
B6126138722.641201%
C61271041.697405%
D6127119019.422229%

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 7301 6127 0 0 0.00% 0.00%
B 7301 6126 1258 1258 17.23% 20.54%
C 7302 6128 21 21 0.29% 0.34%
D 7302 6128 1005 1005 13.76% 16.40%

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 87309 547.17 795 780 158.1
A 13 254 9988 58.23 795 780 158.1
A 12 96 7374 41.7 795 780 158.1
B 0 189 3630300 28605.67 682 669 126.9
B 12 111 15385 115.98 682 669 126.9
B 11 111 13900 104.28 682 669 126.9
C 2 16 223409 1263.84 755 761 176.2
C 14 238 123122 694.57 755 761 176.2
C 15 208 51064 285.54 755 761 176.2
D 7 80 4074061 23617.45 709 692 172.5
D 1 52 308156 1782.68 709 692 172.5
D 12 227 72218 414.71 709 692 172.5

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