ASTROSAT CZTI

Data Quality Report

Orbit 20398

Creation date: 2024-06-27T18:14:53.436292
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_198T01_9000003014_20398cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20398cztM0_level2_quad_clean.evt
Size (bytes)868,728,960153,141,120
Size828.5 MB 146.0 MB
Events in quadrant A5,808,764970,178
Events in quadrant B6,413,848979,664
Events in quadrant C5,809,854942,062
Events in quadrant D7,462,057913,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248802
B0267702
C0247802
D0302022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120411531.270659%
B120412572.134374%
C120411661.378623%
D120415984.966365%

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 13346 12043 12 12 0.09% 0.10%
B 13346 12043 54 54 0.40% 0.45%
C 13346 12043 0 0 0.00% 0.00%
D 13346 12043 389 389 2.91% 3.23%

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 91388 302.33 1482 1448 297.5
A 0 226 12626 37.57 1482 1448 297.5
A 3 137 12136 35.93 1482 1448 297.5
B 7 220 304757 1088.86 1465 1428 278.6
B 0 189 250297 893.37 1465 1428 278.6
B 12 111 34301 118.0 1465 1428 278.6
C 14 238 221055 658.3 1422 1430 333.6
C 9 221 25112 70.98 1422 1430 333.6
C 13 61 9895 25.37 1422 1430 333.6
D 1 52 1907311 5474.86 1429 1389 348.1
D 13 153 61407 172.4 1429 1389 348.1
D 2 234 47975 133.82 1429 1389 348.1

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