ASTROSAT CZTI

Data Quality Report

Orbit 31786

Creation date: 2024-06-27T20:32:40.952236
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/AS1A10_109T01_9000004638_31786cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31786cztM0_level2_quad_clean.evt
Size (bytes)201,971,52029,658,240
Size192.6 MB 28.3 MB
Events in quadrant A1,513,921192,410
Events in quadrant B1,695,720196,591
Events in quadrant C1,297,511186,218
Events in quadrant D1,475,242180,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060341
B063501
C052581
D058301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19551256.393862%
B1955783.989770%
C19561155.879346%
D1956512.607362%

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 3145 1956 45 45 1.43% 2.30%
B 3145 1956 0 0 0.00% 0.00%
C 3146 1957 7 7 0.22% 0.36%
D 3146 1957 5 5 0.16% 0.26%

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 13 304222 4848.85 313 309 62.7
A 13 254 3205 46.2 313 309 62.7
A 3 137 2737 38.74 313 309 62.7
B 6 159 472848 8156.5 304 299 57.9
B 0 190 24281 413.94 304 299 57.9
B 12 111 6525 107.46 304 299 57.9
C 0 10 86377 1244.58 294 297 69.2
C 14 238 49571 712.43 294 297 69.2
C 4 175 7742 107.64 294 297 69.2
D 8 195 261879 3597.36 304 298 72.7
D 7 223 28811 392.12 304 298 72.7
D 2 250 13111 176.21 304 298 72.7

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