ASTROSAT CZTI

Data Quality Report

Orbit 25561

Creation date: 2024-06-27T19:19:02.072625
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_043T02_9000003726_25561cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25561cztM0_level2_quad_clean.evt
Size (bytes)521,081,28067,426,560
Size496.9 MB 64.3 MB
Events in quadrant A3,573,016408,936
Events in quadrant B3,664,924417,627
Events in quadrant C3,570,707384,583
Events in quadrant D4,528,756373,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144260
B0147340
C0144220
D0178830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542320.489147%
B6542530.810150%
C6542600.917151%
D65421422.170590%

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 7832 6543 0 0 0.00% 0.00%
B 7832 6543 0 0 0.00% 0.00%
C 7832 6543 1 1 0.01% 0.02%
D 7832 6543 108 108 1.38% 1.65%

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 10161 50.38 924 909 183.6
A 0 226 8126 39.3 924 909 183.6
A 3 137 7735 37.17 924 909 183.6
B 12 111 20301 113.17 923 903 171.4
B 11 111 17885 99.07 923 903 171.4
B 0 219 17246 95.34 923 903 171.4
C 14 238 141769 707.78 864 872 199.1
C 5 112 33247 162.63 864 872 199.1
C 3 233 23546 113.9 864 872 199.1
D 1 52 665797 3159.04 866 842 210.5
D 8 195 355294 1683.91 866 842 210.5
D 2 244 133813 631.71 866 842 210.5

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