ASTROSAT CZTI

Data Quality Report

Orbit 27612

Creation date: 2024-06-27T19:42:09.750647
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_257T01_9000003976_27612cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27612cztM0_level2_quad_clean.evt
Size (bytes)1,310,146,560240,163,200
Size1.2 GB 229.0 MB
Events in quadrant A8,220,4691,553,914
Events in quadrant B11,420,0481,538,353
Events in quadrant C8,381,7211,499,613
Events in quadrant D10,455,3411,457,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362330
B0453800
C0363630
D0431660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177641270.714929%
B177638955.038563%
C177631781.002083%
D177643602.026571%

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 19709 17767 0 0 0.00% 0.00%
B 19708 17766 465 465 2.36% 2.62%
C 19708 17766 0 0 0.00% 0.00%
D 19709 17767 263 263 1.33% 1.48%

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 27864 60.09 2126 2075 429.2
A 3 137 20676 43.34 2126 2075 429.2
A 0 226 18137 37.42 2126 2075 429.2
B 3 64 2010174 5049.29 2084 2028 397.7
B 10 245 819909 2056.48 2084 2028 397.7
B 0 230 134327 332.65 2084 2028 397.7
C 14 238 324191 673.17 2041 2053 478.5
C 15 208 33145 64.97 2041 2053 478.5
C 2 16 30955 60.4 2041 2053 478.5
D 1 52 1378513 2795.97 2054 1998 492.3
D 2 250 678099 1373.29 2054 1998 492.3
D 7 80 371185 749.89 2054 1998 492.3

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