ASTROSAT CZTI

Data Quality Report

Orbit 35788

Creation date: 2022-05-12T12:36:44.216332
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/AS1A09_029T09_9000005138_35788cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35788cztM0_level2_quad_clean.evt
Size (bytes)661,049,28061,364,160
Size630.4 MB 58.5 MB
Events in quadrant A7,939,851221,660
Events in quadrant B3,891,008426,307
Events in quadrant C3,090,289415,815
Events in quadrant D4,706,951388,258

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02771126
B0152342
C0127312
D0178823

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5787244742.284431%
B57902263.903282%
C57901141.968912%
D57893415.890482%

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 7133 5787 2394 2394 33.56% 41.37%
B 7133 5791 166 166 2.33% 2.87%
C 7133 5791 105 105 1.47% 1.81%
D 7133 5791 295 295 4.14% 5.09%

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 15 169 5988469 63555.12 464 456 94.2
A 10 83 138010 1459.96 464 456 94.2
A 13 6 12049 123.04 464 456 94.2
B 5 255 351946 2863.64 642 625 122.7
B 5 172 303206 2466.36 642 625 122.7
B 4 171 294549 2395.79 642 625 122.7
C 0 10 317172 2169.06 627 631 145.9
C 15 214 243128 1661.68 627 631 145.9
C 10 49 54929 372.07 627 631 145.9
D 14 52 1012018 6614.73 620 600 152.9
D 8 195 424733 2773.85 620 600 152.9
D 13 249 310930 2029.57 620 600 152.9

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