ASTROSAT CZTI

Data Quality Report

Orbit 17239

Creation date: 2024-06-27T17:33:58.845387
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/AS1T03_063T01_9000002550_17239cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17239cztM0_level2_quad_clean.evt
Size (bytes)480,248,64080,922,240
Size458.0 MB 77.2 MB
Events in quadrant A3,483,702507,313
Events in quadrant B3,578,181522,168
Events in quadrant C3,483,497494,816
Events in quadrant D3,574,079489,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143232
B0147672
C0142572
D0147372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62561682.685422%
B62561151.838235%
C62561482.365729%
D6255801.278977%

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 7581 6257 66 66 0.87% 1.05%
B 7581 6257 9 9 0.12% 0.14%
C 7581 6257 14 14 0.18% 0.22%
D 7580 6256 19 19 0.25% 0.30%

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 15 174 209700 1230.37 851 836 169.8
A 0 226 7710 40.49 851 836 169.8
A 12 194 6169 31.42 851 836 169.8
B 3 209 81643 504.38 856 838 160.2
B 15 35 59044 363.32 856 838 160.2
B 7 220 39714 242.66 856 838 160.2
C 7 220 155791 828.72 810 818 187.0
C 14 238 125342 665.89 810 818 187.0
C 3 233 24092 124.46 810 818 187.0
D 12 233 121140 607.0 822 801 198.3
D 1 52 90456 452.23 822 801 198.3
D 10 70 88149 440.59 822 801 198.3

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