ASTROSAT CZTI

Data Quality Report

Orbit 18294

Creation date: 2024-06-27T17:47:59.006898
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_006T01_9000002720_18294cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18294cztM0_level2_quad_clean.evt
Size (bytes)617,569,92063,308,160
Size589.0 MB 60.4 MB
Events in quadrant A3,359,134387,962
Events in quadrant B3,403,081394,492
Events in quadrant C3,317,862382,641
Events in quadrant D8,196,060310,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137362
B0138822
C0136292
D0287652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310390.618067%
B6310560.887480%
C6310821.299525%
D6310134721.347068%

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 7575 6311 3 3 0.04% 0.05%
B 7575 6311 3 3 0.04% 0.05%
C 7575 6311 3 3 0.04% 0.05%
D 7575 6311 1306 1306 17.24% 20.69%

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 9 143 85920 511.14 838 823 166.5
A 15 174 54835 324.43 838 823 166.5
A 0 226 7185 38.21 838 823 166.5
B 0 244 26685 164.92 843 828 156.8
B 7 220 22092 135.63 843 828 156.8
B 0 189 19939 121.89 843 828 156.8
C 14 238 127859 679.86 811 818 186.9
C 0 207 29007 150.85 811 818 186.9
C 13 61 5698 26.12 811 818 186.9
D 7 238 4806624 25969.81 761 740 185.1
D 1 52 293886 1584.09 761 740 185.1
D 13 168 89001 476.94 761 740 185.1

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