ASTROSAT CZTI

Data Quality Report

Orbit 28886

Creation date: 2024-06-27T19:57:55.738323
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_115T03_9000004142_28886cztM0_level2.evt modeM0/AS1A10_115T03_9000004142_28886cztM0_level2_quad_clean.evt
Size (bytes)1,320,488,640183,689,280
Size1.2 GB 175.2 MB
Events in quadrant A6,869,3821,159,303
Events in quadrant B7,289,1281,175,772
Events in quadrant C9,399,9671,122,807
Events in quadrant D15,437,0201,085,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301473
B0312653
C0376333
D0560563

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147591110.752083%
B147592131.443187%
C147596034.085643%
D14759168711.430314%

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 15974 14759 0 0 0.00% 0.00%
B 15974 14759 49 49 0.31% 0.33%
C 15974 14759 106 106 0.66% 0.72%
D 15974 14759 1569 1569 9.82% 10.63%

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 6 16 46815 127.87 1755 1717 352.7
A 15 174 30513 81.65 1755 1717 352.7
A 13 254 27692 73.65 1755 1717 352.7
B 10 245 346194 1029.03 1745 1699 334.8
B 0 183 45804 131.74 1745 1699 334.8
B 12 111 41740 119.6 1745 1699 334.8
C 3 233 1972109 5060.02 1669 1678 389.4
C 15 208 461524 1180.87 1669 1678 389.4
C 14 238 320892 819.73 1669 1678 389.4
D 8 195 6607485 16449.84 1655 1607 401.6
D 1 52 2185437 5438.14 1655 1607 401.6
D 7 80 166722 411.17 1655 1607 401.6

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