ASTROSAT CZTI

Data Quality Report

Orbit 16585

Creation date: 2024-06-27T17:24:43.060858
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_001T01_9000002446_16585cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16585cztM0_level2_quad_clean.evt
Size (bytes)290,448,00052,764,480
Size277.0 MB 50.3 MB
Events in quadrant A2,523,148385,719
Events in quadrant B1,750,657401,124
Events in quadrant C1,741,985385,018
Events in quadrant D2,592,149228,901

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093002
B070361
C072141
D096301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A273131811.644086%
B2731582.123764%
C2731732.673014%
D2731148554.375687%

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 3927 2733 152 152 3.87% 5.56%
B 3927 2733 11 11 0.28% 0.40%
C 3927 2733 2 2 0.05% 0.07%
D 3927 2728 188 188 4.79% 6.89%

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 1165280 16401.92 351 345 71.0
A 15 223 4779 62.43 351 345 71.0
A 0 226 3160 39.63 351 345 71.0
B 15 35 98244 1442.88 357 349 67.8
B 0 85 94189 1383.11 357 349 67.8
B 0 229 66785 979.2 357 349 67.8
C 3 233 340066 4215.71 344 346 80.6
C 14 238 53450 658.99 344 346 80.6
C 7 247 6106 71.48 344 346 80.6
D 1 52 1535790 28887.18 214 207 53.2
D 5 222 197826 3717.58 214 207 53.2
D 10 70 35551 664.89 214 207 53.2

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