ASTROSAT CZTI

Data Quality Report

Orbit 41317

Creation date: 2024-06-27T22:27:27.278057
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/AS1A12_025T14_9000005646_41317cztM0_level2.fits modeM0/AS1A12_025T14_9000005646_41317cztM0_level2_quad_clean.evt
Size (bytes)223,286,40062,447,040
Size212.9 MB 59.6 MB
Events in quadrant A1,960,328424,668
Events in quadrant B1,698,616441,233
Events in quadrant C2,108,356393,966
Events in quadrant D2,210,467371,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078301
B074231
C083671
D090331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367460.163310%
B367450.136091%
C36741383.756124%
D3674792.150245%

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 3674 3674 2 2 0.05% 0.05%
B 3674 3674 2 2 0.05% 0.05%
C 3674 3674 134 134 3.65% 3.65%
D 3674 3674 74 74 2.01% 2.01%

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 309479 3529.98 422 413 87.6
A 12 189 17505 195.22 422 413 87.6
A 3 137 4791 50.0 422 413 87.6
B 0 245 23829 284.45 417 406 82.3
B 7 202 18364 218.08 417 406 82.3
B 12 111 10301 120.17 417 406 82.3
C 0 10 403395 4298.38 398 400 93.8
C 15 214 152288 1620.05 398 400 93.8
C 13 61 2599 23.45 398 400 93.8
D 2 120 211167 2107.84 403 390 100.0
D 13 249 207234 2068.51 403 390 100.0
D 5 222 107501 1071.15 403 390 100.0

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