ASTROSAT CZTI

Data Quality Report

Orbit 36390

Creation date: 2022-06-21T20:29:04.042889
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/AS1T04_084T01_9000005198_36390cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36390cztM0_level2_quad_clean.evt
Size (bytes)189,624,96027,302,400
Size180.8 MB 26.0 MB
Events in quadrant A1,235,443169,764
Events in quadrant B1,566,265168,113
Events in quadrant C1,311,737167,547
Events in quadrant D1,475,164158,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050312
B061521
C051001
D058341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224430.133690%
B2244632.807487%
C2244271.203209%
D2244421.871658%

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 4216 2245 0 0 0.00% 0.00%
B 4216 2245 42 42 1.00% 1.87%
C 4216 2245 21 21 0.50% 0.94%
D 4216 2245 39 39 0.93% 1.74%

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 10 83 86269 1416.81 295 290 60.7
A 13 254 3869 58.98 295 290 60.7
A 9 143 2864 42.42 295 290 60.7
B 5 172 227457 4007.51 292 285 56.7
B 5 255 55843 980.09 292 285 56.7
B 0 189 55649 976.67 292 285 56.7
C 15 214 97589 1438.88 286 289 67.6
C 0 10 94577 1394.33 286 289 67.6
C 2 16 2545 33.36 286 289 67.6
D 13 249 103710 1464.14 286 279 70.6
D 12 6 97411 1374.97 286 279 70.6
D 2 249 55316 779.09 286 279 70.6

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