ASTROSAT CZTI

Data Quality Report

Orbit 30469

Creation date: 2024-06-27T20:15:38.723239
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_058T03_9000004380_30469cztM0_level2.evt modeM0/AS1A10_058T03_9000004380_30469cztM0_level2_quad_clean.evt
Size (bytes)532,529,280116,098,560
Size507.9 MB 110.7 MB
Events in quadrant A3,393,704807,230
Events in quadrant B4,906,091802,206
Events in quadrant C3,565,661748,288
Events in quadrant D3,857,653741,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140541
B0184691
C0145651
D0157113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5973961.607233%
B59731372.293655%
C59742754.603281%
D59731492.494559%

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 7248 5974 8 8 0.11% 0.13%
B 7248 5974 1 1 0.01% 0.02%
C 7249 5975 18 18 0.25% 0.30%
D 7248 5974 100 100 1.38% 1.67%

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 0 13 104394 622.79 850 838 166.3
A 13 254 11215 62.41 850 838 166.3
A 8 192 11176 62.17 850 838 166.3
B 6 159 1626103 10627.58 826 811 152.9
B 0 229 29549 187.91 826 811 152.9
B 12 111 18176 113.55 826 811 152.9
C 14 238 157405 871.86 782 788 179.6
C 3 233 111540 616.53 782 788 179.6
C 15 208 75243 414.48 782 788 179.6
D 13 104 462289 2431.16 808 789 189.8
D 8 195 138363 724.73 808 789 189.8
D 7 238 85021 443.73 808 789 189.8

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