ASTROSAT CZTI

Data Quality Report

Orbit 38393

Creation date: 2024-06-27T21:52:08.417518
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/AS1A12_025T09_9000005382_38393cztM0_level2.fits modeM0/AS1A12_025T09_9000005382_38393cztM0_level2_quad_clean.evt
Size (bytes)402,209,28083,004,480
Size383.6 MB 79.2 MB
Events in quadrant A2,686,474569,225
Events in quadrant B3,050,857583,941
Events in quadrant C2,411,699553,784
Events in quadrant D6,349,966454,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112062
B0126112
C0103492
D0223232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5015220.438684%
B5015330.658026%
C5015110.219342%
D501567513.459621%

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 6658 5016 13 13 0.20% 0.26%
B 6658 5016 4 4 0.06% 0.08%
C 6658 5016 8 8 0.12% 0.16%
D 6658 5016 653 653 9.81% 13.02%

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 362086 3256.86 551 540 111.0
A 12 189 59774 533.59 551 540 111.0
A 13 248 49938 444.98 551 540 111.0
B 0 183 762690 7203.68 552 536 105.8
B 4 232 35908 334.33 552 536 105.8
B 4 171 23744 219.36 552 536 105.8
C 15 214 212548 1678.2 543 548 126.3
C 0 10 36446 284.17 543 548 126.3
C 14 254 33040 257.21 543 548 126.3
D 10 203 2754124 22009.77 512 497 125.1
D 12 227 559953 4471.73 512 497 125.1
D 7 223 386404 3084.55 512 497 125.1

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