ASTROSAT CZTI

Data Quality Report

Orbit 00816

Creation date: 2024-06-27T14:03:21.076579
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/AS1P01_010T01_9000000112_00816cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00816cztM0_level2_quad_clean.evt
Size (bytes)1,128,985,920100,719,360
Size1.1 GB 96.1 MB
Events in quadrant A8,635,819643,661
Events in quadrant B8,740,630656,403
Events in quadrant C8,224,453642,238
Events in quadrant D8,135,131628,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305620
B0308080
C0293450
D0290810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68671832.664919%
B68671011.470802%
C68661091.587533%
D68661031.500146%

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 7017 6869 424 424 6.04% 6.17%
B 7017 6868 378 378 5.39% 5.50%
C 7016 6868 331 331 4.72% 4.82%
D 7016 6867 390 390 5.56% 5.68%

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 15 233 362119 696.03 2144 2160 517.2
A 15 17 33035 59.7 2144 2160 517.2
A 14 79 13972 22.84 2144 2160 517.2
B 0 220 100694 182.32 2254 2261 539.9
B 5 191 23760 39.82 2254 2261 539.9
B 7 221 20669 34.1 2254 2261 539.9
C 15 241 50069 82.44 2068 2138 581.4
C 3 111 34913 56.38 2068 2138 581.4
C 3 79 30346 48.52 2068 2138 581.4
D 13 25 161942 255.22 2013 2084 626.3
D 1 4 149172 234.84 2013 2084 626.3
D 13 200 98981 154.7 2013 2084 626.3

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