ASTROSAT CZTI

Data Quality Report

Orbit 25767

Creation date: 2024-06-27T19:21:16.694387
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_147T01_9000003754_25767cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25767cztM0_level2_quad_clean.evt
Size (bytes)502,718,400112,360,320
Size479.4 MB 107.2 MB
Events in quadrant A3,163,412748,230
Events in quadrant B3,297,775770,255
Events in quadrant C3,313,511736,123
Events in quadrant D5,015,807701,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134020
B0137210
C0136140
D0193410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6401490.765505%
B64021011.577632%
C64021041.624492%
D64023024.717276%

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 8921 6404 0 0 0.00% 0.00%
B 8922 6404 5 5 0.06% 0.08%
C 8922 6404 0 0 0.00% 0.00%
D 8922 6404 225 225 2.52% 3.51%

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 9249 51.48 821 803 164.1
A 3 137 7313 39.68 821 803 164.1
A 0 226 6824 36.7 821 803 164.1
B 10 247 27184 171.81 824 804 153.5
B 0 190 21466 134.57 824 804 153.5
B 12 111 18525 115.41 824 804 153.5
C 14 238 130044 687.24 805 811 188.0
C 3 233 47313 247.29 805 811 188.0
C 13 61 5450 24.67 805 811 188.0
D 8 195 1038054 5537.2 792 774 187.3
D 7 80 586195 3125.09 792 774 187.3
D 13 104 139563 740.88 792 774 187.3

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