ASTROSAT CZTI

Data Quality Report

Orbit 25212

Creation date: 2024-06-27T19:15:07.507248
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_097T01_9000003692_25212cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25212cztM0_level2_quad_clean.evt
Size (bytes)2,281,550,400335,229,120
Size2.1 GB 319.7 MB
Events in quadrant A13,486,1952,121,200
Events in quadrant B14,315,5882,145,948
Events in quadrant C19,627,1111,973,784
Events in quadrant D19,780,5411,986,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576870
B0600130
C0761040
D0779370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280052030.724871%
B280053731.331905%
C2800522718.109266%
D2800510333.688627%

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 32196 28011 3 3 0.01% 0.01%
B 32196 28011 60 60 0.19% 0.21%
C 32196 28010 1486 1486 4.62% 5.31%
D 32196 28010 749 749 2.33% 2.67%

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 44045 58.38 3490 3423 695.8
A 3 137 32446 41.71 3490 3423 695.8
A 0 226 30005 38.2 3490 3423 695.8
B 3 64 539000 821.89 3439 3354 651.7
B 0 190 181690 273.64 3439 3354 651.7
B 12 111 81012 119.16 3439 3354 651.7
C 7 247 6131906 8220.68 3198 3226 745.5
C 14 238 514590 685.92 3198 3226 745.5
C 2 16 400529 532.92 3198 3226 745.5
D 8 195 2077639 2549.02 3340 3242 813.8
D 1 52 1858921 2280.26 3340 3242 813.8
D 10 70 1227361 1504.2 3340 3242 813.8

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