ASTROSAT CZTI

Data Quality Report

Orbit 31975

Creation date: 2024-06-27T20:34:47.166070
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/AS1A10_053T10_9000004670_31975cztM0_level2.evt modeM0/AS1A10_053T10_9000004670_31975cztM0_level2_quad_clean.evt
Size (bytes)1,371,798,720168,039,360
Size1.3 GB 160.3 MB
Events in quadrant A6,892,0811,066,742
Events in quadrant B11,163,2021,073,810
Events in quadrant C12,463,607984,312
Events in quadrant D10,124,3241,036,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283272
B0426732
C0458912
D0391032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13424950.707688%
B134254063.024209%
C13425189114.085661%
D134252161.608939%

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 15839 13424 0 0 0.00% 0.00%
B 15840 13425 192 192 1.21% 1.43%
C 15840 13425 1218 1218 7.69% 9.07%
D 15840 13426 142 142 0.90% 1.06%

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 13 254 20194 52.62 1786 1755 350.4
A 3 137 17382 44.6 1786 1755 350.4
A 0 226 15054 37.95 1786 1755 350.4
B 6 159 3506852 10716.45 1761 1721 327.1
B 10 245 668741 2039.32 1761 1721 327.1
B 0 190 65337 194.5 1761 1721 327.1
C 0 10 5199307 13594.92 1675 1692 382.3
C 3 233 375700 978.26 1675 1692 382.3
C 14 238 276922 719.89 1675 1692 382.3
D 11 164 2250774 5520.99 1747 1709 407.4
D 7 238 536717 1313.33 1747 1709 407.4
D 8 195 351530 858.74 1747 1709 407.4

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