ASTROSAT CZTI

Data Quality Report

Orbit 22777

Creation date: 2024-06-27T18:45:36.513539
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/AS1T03_168T01_9000003368_22777cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22777cztM0_level2_quad_clean.evt
Size (bytes)1,327,815,360349,254,720
Size1.2 GB 333.1 MB
Events in quadrant A8,630,9562,404,223
Events in quadrant B8,881,4672,425,280
Events in quadrant C8,744,9512,297,657
Events in quadrant D12,689,8322,161,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380774
B0385894
C0382854
D0505414

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187301220.651361%
B187311760.939619%
C187312241.195878%
D1873111736.262346%

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 20965 18735 0 0 0.00% 0.00%
B 20966 18736 1 1 0.00% 0.01%
C 20966 18736 9 9 0.04% 0.05%
D 20966 18735 917 917 4.37% 4.89%

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 10 17 46433 99.37 2222 2177 445.4
A 13 254 34638 72.88 2222 2177 445.4
A 0 226 19468 38.82 2222 2177 445.4
B 0 230 63508 147.26 2221 2172 416.5
B 12 111 49371 113.32 2221 2172 416.5
B 0 228 43774 99.88 2221 2172 416.5
C 14 238 334853 673.01 2125 2138 494.4
C 10 22 85518 168.66 2125 2138 494.4
C 2 16 33270 62.97 2125 2138 494.4
D 1 52 3792880 7562.91 2068 2006 501.2
D 12 227 342192 678.68 2068 2006 501.2
D 12 233 155044 305.32 2068 2006 501.2

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