ASTROSAT CZTI

Data Quality Report

Orbit 16877

Creation date: 2024-06-27T17:29:08.859620
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_074T02_9000002504_16877cztM0_level2.evt modeM0/AS1A05_074T02_9000002504_16877cztM0_level2_quad_clean.evt
Size (bytes)524,088,00071,663,040
Size499.8 MB 68.3 MB
Events in quadrant A3,335,938440,318
Events in quadrant B3,416,772447,936
Events in quadrant C3,377,862431,116
Events in quadrant D5,315,520412,057

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136663
B0139452
C0139432
D0200892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62791282.038541%
B62791482.357063%
C62791722.739290%
D62794767.580825%

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 7530 6280 0 0 0.00% 0.00%
B 7530 6280 4 4 0.05% 0.06%
C 7530 6281 0 0 0.00% 0.00%
D 7530 6281 279 279 3.71% 4.44%

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 12 189 15098 82.52 863 848 172.7
A 0 226 7942 41.08 863 848 172.7
A 12 194 6291 31.52 863 848 172.7
B 12 111 18704 111.06 862 842 160.8
B 11 111 16140 95.12 862 842 160.8
B 14 111 14140 82.68 862 842 160.8
C 14 238 131308 681.74 831 839 191.4
C 13 61 5950 26.71 831 839 191.4
C 3 233 3984 16.43 831 839 191.4
D 1 52 2032933 10284.03 825 802 197.6
D 7 207 101104 507.6 825 802 197.6
D 11 66 37742 186.94 825 802 197.6

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