ASTROSAT CZTI

Data Quality Report

Orbit 52136

Creation date: 2025-05-19T02:18:54.532389
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/AS1C09_011T07_9000006470_52136cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52136cztM0_level2_quad_clean.evt
Size (bytes)923,558,40061,686,720
Size880.8 MB 58.8 MB
Events in quadrant A3,043,559578,700
Events in quadrant B6,734,294469,528
Events in quadrant C8,646,968387,603
Events in quadrant D15,291,7077,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132341
B0242147
C0299215
D04959124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6076370.608953%
B6076157425.905201%
C6076219236.076366%
D6073601699.061419%

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 7111 6077 20 20 0.28% 0.33%
B 7112 6077 1281 1281 18.01% 21.08%
C 7110 6075 1770 1770 24.89% 29.14%
D 7109 6072 5670 5670 79.76% 93.38%

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 3 144267 902.54 631 616 159.2
A 14 254 119726 748.36 631 616 159.2
A 3 114 63417 394.57 631 616 159.2
B 4 81 3186162 28386.06 536 516 112.2
B 5 185 301831 2684.9 536 516 112.2
B 12 32 274862 2444.59 536 516 112.2
C 15 224 3762471 26298.71 513 509 143.0
C 15 193 1906143 13321.7 513 509 143.0
C 13 3 307204 2144.01 513 509 143.0
D 6 42 9508654 179701.65 179 170 52.9
D 15 94 3472403 65622.03 179 170 52.9
D 15 78 479490 9058.71 179 170 52.9

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