ASTROSAT CZTI

Data Quality Report

Orbit 21771

Creation date: 2024-06-27T18:31:59.970102
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/AS1A07_005T01_9000003224_21771cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21771cztM0_level2_quad_clean.evt
Size (bytes)768,153,60098,118,720
Size732.6 MB 93.6 MB
Events in quadrant A3,206,742690,348
Events in quadrant B3,528,108713,128
Events in quadrant C3,208,412671,911
Events in quadrant D12,893,183454,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135023
B0144112
C0134062
D0426522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6309390.618165%
B6309961.521636%
C6309891.410683%
D6309403063.877001%

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 7564 6310 10 10 0.13% 0.16%
B 7564 6310 33 33 0.44% 0.52%
C 7564 6310 0 0 0.00% 0.00%
D 7564 6310 3411 3411 45.10% 54.06%

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 12 96 46080 278.28 815 802 162.7
A 13 254 11856 67.94 815 802 162.7
A 13 252 9858 55.66 815 802 162.7
B 3 64 143075 915.16 828 811 155.5
B 0 197 68082 432.74 828 811 155.5
B 0 190 24111 149.89 828 811 155.5
C 14 238 124985 672.65 790 799 184.6
C 13 61 5445 25.17 790 799 184.6
C 0 10 3555 14.93 790 799 184.6
D 7 238 10245722 73269.83 577 561 139.8
D 2 136 107070 761.71 577 561 139.8
D 2 16 84700 601.73 577 561 139.8

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