ASTROSAT CZTI

Data Quality Report

Orbit 42903

Creation date: 2024-06-27T22:45:36.656956
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/AS1T05_143T01_9000005830_42903cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42903cztM0_level2_quad_clean.evt
Size (bytes)1,041,704,640244,411,200
Size993.4 MB 233.1 MB
Events in quadrant A9,423,6941,632,593
Events in quadrant B7,090,2301,701,740
Events in quadrant C8,013,8761,594,898
Events in quadrant D12,822,8571,392,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370084
B0319994
C0337414
D0488424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156254222.700800%
B15625270.172800%
C156251390.889600%
D1562512858.224000%

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 19893 15628 329 329 1.65% 2.11%
B 19893 15628 10 10 0.05% 0.06%
C 19893 15628 142 142 0.71% 0.91%
D 19893 15628 1206 1206 6.06% 7.72%

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 10 83 1570244 4569.28 1682 1644 343.3
A 15 237 1160838 3376.7 1682 1644 343.3
A 2 79 140584 404.73 1682 1644 343.3
B 0 229 193941 592.28 1690 1639 324.7
B 0 230 78063 235.38 1690 1639 324.7
B 3 112 60490 181.26 1690 1639 324.7
C 15 214 678064 1768.41 1646 1655 382.5
C 14 254 591349 1541.71 1646 1655 382.5
C 12 2 188223 487.77 1646 1655 382.5
D 1 47 1752502 4491.67 1601 1555 389.8
D 1 52 1711338 4386.08 1601 1555 389.8
D 13 249 1080547 2767.92 1601 1555 389.8

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