ASTROSAT CZTI

Data Quality Report

Orbit 42038

Creation date: 2024-06-27T22:36:03.554687
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_037T01_9000005736_42038cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42038cztM0_level2_quad_clean.evt
Size (bytes)288,984,96087,059,520
Size275.6 MB 83.0 MB
Events in quadrant A2,942,115588,322
Events in quadrant B2,458,015605,826
Events in quadrant C2,520,264567,506
Events in quadrant D2,383,722521,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118703
B0105652
C0104812
D0106242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5041220.436421%
B5041180.357072%
C504160.119024%
D504190.178536%

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 6983 5042 19 19 0.27% 0.38%
B 6983 5042 10 10 0.14% 0.20%
C 6983 5042 2 2 0.03% 0.04%
D 6983 5042 8 8 0.11% 0.16%

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 507037 4252.21 575 565 119.1
A 12 189 115180 962.28 575 565 119.1
A 2 79 58802 488.94 575 565 119.1
B 5 255 128322 1141.85 577 561 111.9
B 0 190 32234 283.07 577 561 111.9
B 12 111 14357 123.3 577 561 111.9
C 15 214 212506 1602.26 562 566 132.3
C 8 79 76948 577.45 562 566 132.3
C 12 249 34136 253.79 562 566 132.3
D 2 249 93850 676.96 555 540 137.8
D 12 6 64426 463.49 555 540 137.8
D 1 52 36933 264.03 555 540 137.8

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