ASTROSAT CZTI

Data Quality Report

Orbit 46700

Creation date: 2024-06-27T23:26:36.708573
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/AS1A13_037T01_9000006256_46700cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46700cztM0_level2_quad_clean.evt
Size (bytes)1,112,999,040198,109,440
Size1.0 GB 188.9 MB
Events in quadrant A12,619,5151,335,834
Events in quadrant B7,454,4991,359,815
Events in quadrant C8,997,9501,280,628
Events in quadrant D11,115,6881,114,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466472
B0311372
C0359502
D0421097

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131154103.126191%
B131155544.224171%
C131165694.338213%
D1311412619.615678%

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 14060 13116 32 32 0.23% 0.24%
B 14060 13116 132 132 0.94% 1.01%
C 14061 13117 382 382 2.72% 2.91%
D 14060 13116 947 947 6.74% 7.22%

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 6619731 22272.96 1431 1400 297.1
A 13 248 149065 496.94 1431 1400 297.1
A 9 191 111752 371.37 1431 1400 297.1
B 15 36 864462 3074.85 1419 1377 280.7
B 4 171 330177 1171.39 1419 1377 280.7
B 3 112 126827 446.93 1419 1377 280.7
C 5 250 2854430 8803.56 1382 1391 324.1
C 8 131 346231 1064.07 1382 1391 324.1
C 12 2 175782 538.11 1382 1391 324.1
D 1 52 3686981 10725.99 1366 1321 343.6
D 13 249 638662 1854.79 1366 1321 343.6
D 2 37 278483 806.6 1366 1321 343.6

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