ASTROSAT CZTI

Data Quality Report

Orbit 16335

Creation date: 2024-06-27T17:21:20.981983
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_007T01_9000002408_16335cztM0_level2.evt modeM0/AS1C04_007T01_9000002408_16335cztM0_level2_quad_clean.evt
Size (bytes)200,442,2408,426,880
Size191.2 MB 8.0 MB
Events in quadrant A1,009,29436,456
Events in quadrant B3,143,97624,301
Events in quadrant C849,66635,191
Events in quadrant D951,05334,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039930
B0105140
C034650
D038430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1684241.425178%
B1684118770.486936%
C1684171.009501%
D1684402.375297%

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 1685 1685 3 3 0.18% 0.18%
B 1685 1685 791 791 46.94% 46.94%
C 1685 1685 5 5 0.30% 0.30%
D 1685 1685 23 23 1.36% 1.36%

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 164865 3661.36 211 206 45.0
A 15 239 32520 718.53 211 206 45.0
A 0 226 1859 36.76 211 206 45.0
B 3 112 2311303 86722.02 130 127 26.7
B 4 173 269775 10117.97 130 127 26.7
B 0 189 19481 726.22 130 127 26.7
C 14 238 30911 625.28 201 202 49.1
C 0 207 26741 540.37 201 202 49.1
C 3 233 5210 101.97 201 202 49.1
D 10 70 140251 2616.96 206 199 53.5
D 2 69 10535 193.13 206 199 53.5
D 2 234 7140 129.7 206 199 53.5

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