ASTROSAT CZTI

Data Quality Report

Orbit 23327

Creation date: 2024-06-27T18:52:52.245868
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/AS1A07_148T05_9000003446_23327cztM0_level2.evt modeM0/AS1A07_148T05_9000003446_23327cztM0_level2_quad_clean.evt
Size (bytes)1,590,456,960236,560,320
Size1.5 GB 225.6 MB
Events in quadrant A9,094,0321,499,324
Events in quadrant B9,186,8841,527,526
Events in quadrant C10,795,2801,458,313
Events in quadrant D17,814,2651,375,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393994
B0394914
C0441984
D0659984

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189191680.887996%
B189192261.194566%
C189194992.637560%
D18919308616.311644%

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 21274 18921 23 23 0.11% 0.12%
B 21274 18921 14 14 0.07% 0.07%
C 21274 18920 162 162 0.76% 0.86%
D 21274 18922 2704 2704 12.71% 14.29%

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 6 16 173832 371.06 2304 2250 462.4
A 2 79 42560 87.17 2304 2250 462.4
A 13 254 30015 60.04 2304 2250 462.4
B 0 229 135281 304.91 2287 2228 436.4
B 12 111 54456 119.69 2287 2228 436.4
B 4 216 49630 108.63 2287 2228 436.4
C 10 9 1476315 2859.25 2191 2203 515.6
C 14 238 346321 667.47 2191 2203 515.6
C 0 207 269973 519.38 2191 2203 515.6
D 1 52 8093152 15650.13 2092 2029 517.0
D 7 238 1486966 2872.22 2092 2029 517.0
D 13 104 133468 254.23 2092 2029 517.0

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