ASTROSAT CZTI

Data Quality Report

Orbit 17253

Creation date: 2024-06-27T17:34:07.490406
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_185T04_9000002552_17253cztM0_level2.evt modeM0/AS1A05_185T04_9000002552_17253cztM0_level2_quad_clean.evt
Size (bytes)460,376,64097,637,760
Size439.0 MB 93.1 MB
Events in quadrant A3,207,368654,702
Events in quadrant B3,286,098653,763
Events in quadrant C3,215,721615,469
Events in quadrant D3,808,648596,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134862
B0137402
C0133962
D0154392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6257530.847051%
B6256500.799233%
C6256831.326726%
D62562924.667519%

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 7572 6258 0 0 0.00% 0.00%
B 7571 6257 1 1 0.01% 0.02%
C 7571 6257 0 0 0.00% 0.00%
D 7571 6257 204 204 2.69% 3.26%

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 23 58897 356.12 817 800 163.1
A 0 226 11105 63.17 817 800 163.1
A 12 194 6065 32.27 817 800 163.1
B 0 189 74585 483.34 811 793 152.7
B 12 111 16642 103.81 811 793 152.7
B 0 197 15574 96.81 811 793 152.7
C 14 238 120793 669.68 775 784 179.2
C 3 233 56199 309.23 775 784 179.2
C 1 16 14656 77.41 775 784 179.2
D 1 52 528890 2795.0 782 761 189.0
D 13 189 237400 1252.36 782 761 189.0
D 10 70 42326 219.97 782 761 189.0

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