ASTROSAT CZTI

Data Quality Report

Orbit 42535

Creation date: 2024-06-27T22:41:20.366250
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_002T01_9000005810_42535cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42535cztM0_level2_quad_clean.evt
Size (bytes)304,741,44089,660,160
Size290.6 MB 85.5 MB
Events in quadrant A2,855,676600,771
Events in quadrant B2,637,546600,394
Events in quadrant C2,624,967592,365
Events in quadrant D2,746,533548,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116432
B0116842
C0112902
D0119542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533370.131258%
B5334911.706037%
C5333260.487530%
D5333520.975061%

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 7245 5334 5 5 0.07% 0.09%
B 7246 5335 72 72 0.99% 1.35%
C 7245 5334 21 21 0.29% 0.39%
D 7245 5334 48 48 0.66% 0.90%

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 575166 4910.98 574 564 117.0
A 2 79 39316 331.2 574 564 117.0
A 13 248 11258 91.4 574 564 117.0
B 5 172 255962 2391.99 561 546 106.8
B 0 245 105734 985.09 561 546 106.8
B 5 255 34446 317.48 561 546 106.8
C 15 214 224643 1756.61 553 556 127.6
C 5 250 153304 1197.39 553 556 127.6
C 14 254 25500 195.54 553 556 127.6
D 2 249 127388 927.8 558 543 136.7
D 12 233 108357 788.6 558 543 136.7
D 1 52 105364 766.71 558 543 136.7

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