ASTROSAT CZTI

Data Quality Report

Orbit 49795

Creation date: 2024-12-12T09:22:37.409141
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_9000006440_49795cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49795cztM0_level2_quad_clean.evt
Size (bytes)1,013,880,96053,478,720
Size966.9 MB 51.0 MB
Events in quadrant A9,473,561444,106
Events in quadrant B3,529,327671,528
Events in quadrant C9,184,67320,385
Events in quadrant D14,859,31848,216

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325051
B0147852
C0316831
D0483501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231205432.964211%
B62311993.193709%
C6231608097.576633%
D6231583293.596533%

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 7381 6231 1712 1712 23.19% 27.48%
B 7381 6231 93 93 1.26% 1.49%
C 7380 6230 1293 1293 17.52% 20.75%
D 7380 6230 5250 5250 71.14% 84.27%

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 5 16 1554003 10107.86 604 588 153.7
A 5 17 1299103 8449.26 604 588 153.7
A 4 249 745983 4850.18 604 588 153.7
B 1 255 182044 1242.83 692 671 145.9
B 10 28 164874 1125.18 692 671 145.9
B 4 206 144098 982.81 692 671 145.9
C 15 147 3569120 87672.4 117 115 40.7
C 15 148 1659151 40754.12 117 115 40.7
C 15 197 927447 22779.86 117 115 40.7
D 7 61 2824277 32654.82 265 254 86.5
D 15 168 2294504 26528.94 265 254 86.5
D 8 129 1401424 16202.05 265 254 86.5

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