ASTROSAT CZTI

Data Quality Report

Orbit 20161112_G06_168T02_9000000790_level2

Creation date: 2025-11-07T17:29:18.633304
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/AS1G06_168T02_9000000790cztM0_level2.fits modeM0/AS1G06_168T02_9000000790cztM0_level2_quad_clean.evt
Size (bytes)73,638,72081,521,280
Size70.2 MB 77.7 MB
Events in quadrant A446,382500,615
Events in quadrant B424,160501,347
Events in quadrant C436,592479,247
Events in quadrant D374,172438,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172280
B0188740
C0162060
D0203910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7901700.885964%
B79023324.201468%
C7902420.531511%
D79013093.910897%

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 8981 7900 0 0 0.00% 0.00%
B 8981 7897 0 0 0.00% 0.00%
C 8981 7901 0 0 0.00% 0.00%
D 8981 7900 0 0 0.00% 0.00%

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 29 444 10.59 116 108 31.7
A 7 110 379 8.54 116 108 31.7
A 9 19 356 7.82 116 108 31.7
B 2 9 385 10.94 112 106 25.5
B 12 226 318 8.32 112 106 25.5
B 5 128 288 7.14 112 106 25.5
C 1 81 340 7.2 115 107 32.4
C 2 191 324 6.7 115 107 32.4
C 1 80 323 6.67 115 107 32.4
D 3 14 312 7.17 106 97 30.0
D 7 3 304 6.9 106 97 30.0
D 3 31 284 6.23 106 97 30.0

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