ASTROSAT CZTI

Data Quality Report

Orbit 16527

Creation date: 2024-06-27T17:23:57.640820
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_174T01_9000002440_16527cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16527cztM0_level2_quad_clean.evt
Size (bytes)162,489,60044,472,960
Size155.0 MB 42.4 MB
Events in quadrant A1,456,530297,086
Events in quadrant B1,153,716307,743
Events in quadrant C1,104,450289,433
Events in quadrant D1,048,590287,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058080
B049480
C047140
D047760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2283693.022339%
B228330.131406%
C228360.262812%
D2283120.525624%

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 2284 2284 75 75 3.28% 3.28%
B 2284 2284 3 3 0.13% 0.13%
C 2284 2284 0 0 0.00% 0.00%
D 2284 2284 11 11 0.48% 0.48%

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 403650 7124.88 272 267 56.6
A 15 223 3832 62.97 272 267 56.6
A 0 226 2458 38.7 272 267 56.6
B 0 198 34759 632.66 273 266 54.5
B 4 48 12417 222.87 273 266 54.5
B 3 209 12346 221.57 273 266 54.5
C 3 233 73984 1230.35 253 254 59.9
C 14 238 39936 662.18 253 254 59.9
C 7 247 5223 82.92 253 254 59.9
D 15 0 65599 998.82 258 250 65.4
D 2 234 9472 140.95 258 250 65.4
D 1 52 2556 35.25 258 250 65.4

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