ASTROSAT CZTI

Data Quality Report

Orbit 36727

Creation date: 2024-06-27T21:30:51.080694
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/AS1A11_101T01_9000005238_36727cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36727cztM0_level2_quad_clean.evt
Size (bytes)522,388,80059,402,880
Size498.2 MB 56.7 MB
Events in quadrant A2,658,791371,043
Events in quadrant B2,784,371381,215
Events in quadrant C3,360,658362,502
Events in quadrant D6,646,617301,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112492
B0116821
C0133561
D0234931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546150.091558%
B546170.128182%
C54611452.655191%
D5461116121.259843%

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 7375 5462 0 0 0.00% 0.00%
B 7375 5462 0 0 0.00% 0.00%
C 7375 5462 139 139 1.88% 2.54%
D 7375 5462 1277 1277 17.32% 23.38%

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 225959 1787.11 625 613 126.1
A 13 254 8964 66.23 625 613 126.1
A 13 6 6947 50.23 625 613 126.1
B 0 221 119861 995.55 619 603 119.8
B 0 189 81693 676.93 619 603 119.8
B 4 232 44057 362.75 619 603 119.8
C 14 254 442003 3195.21 595 597 138.1
C 0 10 343606 2482.94 595 597 138.1
C 15 214 247554 1787.65 595 597 138.1
D 1 20 3441611 24302.34 569 552 141.6
D 12 17 190802 1343.63 569 552 141.6
D 12 227 181701 1279.36 569 552 141.6

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