ASTROSAT CZTI

Data Quality Report

Orbit 37236

Creation date: 2024-06-27T21:37:17.007928
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_123T11_9000005286_37236cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37236cztM0_level2_quad_clean.evt
Size (bytes)487,117,44074,741,760
Size464.6 MB 71.3 MB
Events in quadrant A3,173,134474,553
Events in quadrant B4,205,314466,070
Events in quadrant C3,230,835460,104
Events in quadrant D3,742,172449,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131573
B0164332
C0132322
D0151332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913530.896330%
B59131923.247083%
C59131171.978691%
D59131322.232369%

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 7255 5913 34 34 0.47% 0.58%
B 7255 5914 100 100 1.38% 1.69%
C 7255 5914 96 96 1.32% 1.62%
D 7255 5914 114 114 1.57% 1.93%

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 310116 2297.22 666 650 134.7
A 9 143 119551 882.62 666 650 134.7
A 15 237 66146 486.19 666 650 134.7
B 0 190 480567 3754.29 657 639 127.8
B 5 172 213291 1663.49 657 639 127.8
B 4 232 192364 1499.79 657 639 127.8
C 15 214 247583 1625.52 647 652 151.9
C 0 10 217186 1425.42 647 652 151.9
C 1 23 96317 629.75 647 652 151.9
D 2 249 699658 4326.47 651 633 161.6
D 2 153 100438 617.72 651 633 161.6
D 2 250 77238 474.13 651 633 161.6

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