ASTROSAT CZTI

Data Quality Report

Orbit 18154

Creation date: 2024-06-27T17:45:56.252078
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/AS1A05_103T01_9000002700_18154cztM0_level2.evt modeM0/AS1A05_103T01_9000002700_18154cztM0_level2_quad_clean.evt
Size (bytes)237,792,96021,686,400
Size226.8 MB 20.7 MB
Events in quadrant A1,331,993121,470
Events in quadrant B1,369,539123,263
Events in quadrant C1,294,639118,670
Events in quadrant D3,034,737113,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054791
B056001
C053141
D0107441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2494783.127506%
B2495943.767535%
C2495973.887776%
D249546618.677355%

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 3494 2495 3 3 0.09% 0.12%
B 3495 2496 6 6 0.17% 0.24%
C 3495 2496 0 0 0.00% 0.00%
D 3495 2496 252 252 7.21% 10.10%

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 15 174 69294 1023.63 327 319 67.4
A 4 2 3063 40.72 327 319 67.4
A 0 226 2852 37.59 327 319 67.4
B 7 220 73565 1126.92 326 317 65.0
B 0 189 8267 122.31 326 317 65.0
B 12 111 7126 104.76 326 317 65.0
C 14 238 48132 633.89 315 317 75.4
C 3 233 13037 168.63 315 317 75.4
C 13 61 2312 26.45 315 317 75.4
D 7 238 1558036 20390.4 307 299 76.4
D 13 187 155145 2026.9 307 299 76.4
D 12 110 65230 849.93 307 299 76.4

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