ASTROSAT CZTI

Data Quality Report

Orbit 07535

Creation date: 2024-06-27T15:20:56.760756
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/AS1G06_076T01_9000001038_07535cztM0_level2.evt modeM0/AS1G06_076T01_9000001038_07535cztM0_level2_quad_clean.evt
Size (bytes)1,368,624,960252,685,440
Size1.3 GB 241.0 MB
Events in quadrant A9,399,8561,584,256
Events in quadrant B9,688,5621,613,322
Events in quadrant C10,646,2821,531,217
Events in quadrant D10,301,7711,486,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422519
B04267610
C0460328
D0455376

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04280
C04280
D04280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20870670.321035%
B208691110.531889%
C208706543.133685%
D208713201.533228%

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 23422 20876 2 2 0.01% 0.01%
B 23422 20875 5 5 0.02% 0.02%
C 23422 20876 575 575 2.45% 2.75%
D 23422 20876 221 221 0.94% 1.06%

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 14 36052 67.61 2432 2371 498.2
A 0 226 23170 41.75 2432 2371 498.2
A 12 194 21090 37.57 2432 2371 498.2
B 12 111 47631 97.67 2451 2389 463.2
B 0 219 47397 97.16 2451 2389 463.2
B 11 111 38427 77.8 2451 2389 463.2
C 9 68 1311489 2400.31 2354 2359 545.4
C 1 16 79459 141.36 2354 2359 545.4
C 8 229 25590 42.59 2354 2359 545.4
D 2 152 599681 1038.13 2356 2277 575.5
D 12 221 243871 419.83 2356 2277 575.5
D 2 14 196525 337.55 2356 2277 575.5

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