ASTROSAT CZTI

Data Quality Report

Orbit 21159

Creation date: 2024-06-27T18:24:17.785543
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/AS1C04_001T01_9000003126_21159cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21159cztM0_level2_quad_clean.evt
Size (bytes)586,460,160116,107,200
Size559.3 MB 110.7 MB
Events in quadrant A2,948,784809,533
Events in quadrant B3,136,469817,505
Events in quadrant C2,886,159794,632
Events in quadrant D8,392,151684,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127191
B0133341
C0124191
D0290501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58651001.705030%
B5866570.971701%
C5866751.278554%
D5866164928.111149%

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 7055 5865 37 37 0.52% 0.63%
B 7056 5867 10 10 0.14% 0.17%
C 7056 5866 1 1 0.01% 0.02%
D 7056 5867 1519 1519 21.53% 25.89%

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 5 16 169210 1177.43 715 701 143.1
A 13 34 21141 142.82 715 701 143.1
A 13 254 8629 55.4 715 701 143.1
B 0 189 122423 906.52 719 702 134.3
B 0 229 86094 635.96 719 702 134.3
B 0 190 37541 274.36 719 702 134.3
C 14 238 110550 679.98 699 705 161.5
C 3 233 31149 188.46 699 705 161.5
C 10 23 8801 50.12 699 705 161.5
D 1 239 5293573 34032.4 651 632 155.5
D 13 153 181128 1160.55 651 632 155.5
D 1 20 121379 776.38 651 632 155.5

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