ASTROSAT CZTI

Data Quality Report

Orbit 16457

Creation date: 2024-06-27T17:22:57.341311
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/AS1C04_007T04_9000002430_16457cztM0_level2.evt modeM0/AS1C04_007T04_9000002430_16457cztM0_level2_quad_clean.evt
Size (bytes)599,359,68075,968,640
Size571.6 MB 72.4 MB
Events in quadrant A3,218,462479,827
Events in quadrant B3,947,933488,119
Events in quadrant C3,325,928478,709
Events in quadrant D7,222,719403,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134183
B0158462
C0135222
D0257012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6441190.294985%
B64411332.064897%
C6441540.838379%
D6441128319.919267%

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 7787 6442 2 2 0.03% 0.03%
B 7787 6443 64 64 0.82% 0.99%
C 7787 6443 0 0 0.00% 0.00%
D 7787 6442 1188 1188 15.26% 18.44%

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 31424 184.38 829 813 166.0
A 0 226 7381 39.56 829 813 166.0
A 12 194 6021 31.37 829 813 166.0
B 15 35 212974 1349.6 837 819 157.2
B 0 244 135768 858.46 837 819 157.2
B 7 220 69525 437.07 837 819 157.2
C 14 238 126508 677.2 805 812 185.6
C 3 233 54342 288.4 805 812 185.6
C 13 61 5756 26.64 805 812 185.6
D 1 52 4323166 24621.53 731 711 175.6
D 12 218 41737 233.69 731 711 175.6
D 7 223 29579 164.44 731 711 175.6

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