ASTROSAT CZTI

Data Quality Report

Orbit 34492

Creation date: 2022-02-13T16:11:28.514432
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/AS1A10_071T14_9000004924_34492cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34492cztM0_level2_quad_clean.evt
Size (bytes)1,298,160,000217,261,440
Size1.2 GB 207.2 MB
Events in quadrant A10,473,9541,378,570
Events in quadrant B9,258,2881,421,722
Events in quadrant C7,689,2871,416,436
Events in quadrant D10,881,6211,328,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412623
B0374973
C0319013
D0425663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1499512438.289430%
B149958035.355118%
C14995550.366789%
D149956614.408136%

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 19713 14998 836 836 4.24% 5.57%
B 19713 14998 502 502 2.55% 3.35%
C 19713 14998 37 37 0.19% 0.25%
D 19713 14998 579 579 2.94% 3.86%

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 3811436 11274.91 1688 1657 337.9
A 10 83 63534 183.12 1688 1657 337.9
A 9 143 34515 97.24 1688 1657 337.9
B 5 172 1862122 5737.65 1703 1661 324.3
B 0 229 218039 667.31 1703 1661 324.3
B 0 189 210238 643.25 1703 1661 324.3
C 15 214 627548 1601.44 1708 1727 390.8
C 0 10 151796 384.02 1708 1727 390.8
C 15 208 134700 340.27 1708 1727 390.8
D 8 195 1422157 3463.93 1681 1638 410.1
D 7 223 1036014 2522.32 1681 1638 410.1
D 2 250 779608 1897.08 1681 1638 410.1

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