ASTROSAT CZTI

Data Quality Report

Orbit 14708

Creation date: 2024-06-27T16:58:44.237627
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/AS1G08_057T09_9000002174_14708cztM0_level2.evt modeM0/AS1G08_057T09_9000002174_14708cztM0_level2_quad_clean.evt
Size (bytes)449,933,76095,990,400
Size429.1 MB 91.5 MB
Events in quadrant A3,173,406619,976
Events in quadrant B3,156,594611,249
Events in quadrant C3,777,080611,339
Events in quadrant D3,070,858604,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137433
B0137802
C0153592
D0137502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6598190.287966%
B6598270.409215%
C6598330.500152%
D6598210.318278%

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 7574 6600 0 0 0.00% 0.00%
B 7574 6600 1 1 0.01% 0.02%
C 7574 6600 0 0 0.00% 0.00%
D 7574 6600 4 4 0.05% 0.06%

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 3 1 25700 154.29 802 783 161.5
A 1 162 22908 137.0 802 783 161.5
A 11 29 11915 68.93 802 783 161.5
B 12 111 17455 110.02 797 775 151.6
B 0 228 16572 104.2 797 775 151.6
B 11 111 14915 93.27 797 775 151.6
C 3 233 698660 3839.84 788 793 181.7
C 3 234 6504 31.42 788 793 181.7
C 13 61 5521 26.01 788 793 181.7
D 13 172 30489 151.18 785 768 196.6
D 2 234 24028 118.31 785 768 196.6
D 2 152 15587 75.38 785 768 196.6

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