ASTROSAT CZTI

Data Quality Report

Orbit 26906

Creation date: 2024-06-27T19:34:18.785594
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/AS1A09_044T01_9000003888_26906cztM0_level2.evt modeM0/AS1A09_044T01_9000003888_26906cztM0_level2_quad_clean.evt
Size (bytes)646,237,44089,631,360
Size616.3 MB 85.5 MB
Events in quadrant A3,806,229593,078
Events in quadrant B5,853,691565,228
Events in quadrant C3,143,894590,317
Events in quadrant D6,342,286526,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152900
B0215550
C0131490
D0232240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62901061.685215%
B629087713.942766%
C6290480.763116%
D629065310.381558%

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 7485 6291 96 96 1.28% 1.53%
B 7485 6290 675 675 9.02% 10.73%
C 7485 6291 2 2 0.03% 0.03%
D 7485 6291 562 562 7.51% 8.93%

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 0 13 731539 4607.55 794 781 158.6
A 13 254 10602 61.92 794 781 158.6
A 5 168 8903 51.21 794 781 158.6
B 3 64 2104596 14898.13 762 746 141.2
B 10 245 404307 2857.76 762 746 141.2
B 0 189 186080 1312.42 762 746 141.2
C 14 238 125143 689.52 770 775 180.4
C 15 208 19427 103.41 770 775 180.4
C 13 61 5292 25.04 770 775 180.4
D 1 52 2179597 12214.81 734 717 178.4
D 7 80 426529 2387.1 734 717 178.4
D 2 250 374449 2095.14 734 717 178.4

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