ASTROSAT CZTI

Data Quality Report

Orbit 20880

Creation date: 2024-06-27T18:20:41.589410
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/AS1A06_002T03_9000003080_20880cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20880cztM0_level2_quad_clean.evt
Size (bytes)878,256,000173,989,440
Size837.6 MB 165.9 MB
Events in quadrant A5,940,4351,122,666
Events in quadrant B6,596,1211,116,867
Events in quadrant C6,072,2151,084,846
Events in quadrant D7,123,4711,061,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261812
B0278942
C0264842
D0297812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12801600.468713%
B12802920.718638%
C128021311.023278%
D128021060.827996%

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 14061 12801 9 9 0.06% 0.07%
B 14062 12802 21 21 0.15% 0.16%
C 14062 12804 19 19 0.14% 0.15%
D 14062 12804 73 73 0.52% 0.57%

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 96 51303 160.72 1529 1495 309.9
A 0 226 13133 37.55 1529 1495 309.9
A 3 137 12513 35.55 1529 1495 309.9
B 0 197 178890 612.58 1521 1482 289.6
B 0 189 177984 609.45 1521 1482 289.6
B 7 220 51324 172.1 1521 1482 289.6
C 14 238 228040 666.75 1453 1458 339.8
C 9 54 154741 451.05 1453 1458 339.8
C 10 91 12565 32.68 1453 1458 339.8
D 1 52 509914 1427.84 1472 1427 356.1
D 1 239 291889 815.62 1472 1427 356.1
D 1 20 274914 767.96 1472 1427 356.1

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