ASTROSAT CZTI

Data Quality Report

Orbit 18453

Creation date: 2024-06-27T17:50:00.385018
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/AS1A05_199T01_9000002732_18453cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18453cztM0_level2_quad_clean.evt
Size (bytes)480,479,040111,110,400
Size458.2 MB 106.0 MB
Events in quadrant A3,128,599732,335
Events in quadrant B4,639,232739,237
Events in quadrant C3,219,762742,541
Events in quadrant D3,141,286716,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134642
B0180412
C0136842
D0135002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227450.722659%
B62273555.700980%
C6227831.332905%
D6226270.433665%

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 7517 6227 14 14 0.19% 0.22%
B 7517 6227 219 219 2.91% 3.52%
C 7517 6227 0 0 0.00% 0.00%
D 7516 6226 2 2 0.03% 0.03%

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 4 2 59721 369.3 798 784 159.6
A 0 226 6881 38.2 798 784 159.6
A 3 137 6027 32.85 798 784 159.6
B 10 245 1469982 9903.06 795 776 148.4
B 0 244 28956 189.94 795 776 148.4
B 12 111 17027 109.54 795 776 148.4
C 14 238 124371 675.59 792 798 182.9
C 3 233 6164 29.34 792 798 182.9
C 13 61 5460 25.49 792 798 182.9
D 12 110 69458 356.55 793 771 192.6
D 13 168 37740 191.9 793 771 192.6
D 2 234 26920 135.74 793 771 192.6

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