ASTROSAT CZTI

Data Quality Report

Orbit 37338

Creation date: 2024-06-27T21:38:42.652936
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/AS1C07_014T01_9000005314_37338cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37338cztM0_level2_quad_clean.evt
Size (bytes)194,627,52028,797,120
Size185.6 MB 27.5 MB
Events in quadrant A1,168,567180,296
Events in quadrant B1,143,893180,984
Events in quadrant C1,343,044177,909
Events in quadrant D2,085,212171,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047797
B0476712
C0532418
D0772438

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223660.268336%
B2231100.448229%
C2229271.211306%
D223124410.936800%

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 3522 2239 1 1 0.03% 0.04%
B 3522 2237 6 6 0.17% 0.27%
C 3522 2236 21 21 0.60% 0.94%
D 3522 2239 202 202 5.74% 9.02%

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 83 128244 2298.7 266 262 55.7
A 13 248 5206 88.8 266 262 55.7
A 13 254 3984 66.85 266 262 55.7
B 4 171 37716 704.09 263 256 53.2
B 0 190 19644 364.41 263 256 53.2
B 15 85 13693 252.56 263 256 53.2
C 1 23 121886 2010.53 253 256 60.5
C 15 214 96268 1587.07 253 256 60.5
C 0 10 62582 1030.24 253 256 60.5
D 12 235 978570 15720.39 248 241 62.2
D 2 249 55125 881.91 248 241 62.2
D 2 153 51077 816.86 248 241 62.2

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