ASTROSAT CZTI

Data Quality Report

Orbit 29860

Creation date: 2024-06-27T20:08:23.032782
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/AS1T03_291T01_9000004278_29860cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29860cztM0_level2_quad_clean.evt
Size (bytes)1,057,213,440159,301,440
Size1008.2 MB 151.9 MB
Events in quadrant A6,212,4601,041,780
Events in quadrant B9,597,2781,038,771
Events in quadrant C7,614,737978,399
Events in quadrant D7,807,987959,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258392
B0361834
C0303602
D0309232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116531911.639063%
B116532532.171115%
C116533192.737492%
D116533623.106496%

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 14008 11655 21 21 0.15% 0.18%
B 14008 11655 9 9 0.06% 0.08%
C 14008 11655 9 9 0.06% 0.08%
D 14008 11655 170 170 1.21% 1.46%

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 8 255 81252 259.5 1577 1552 307.1
A 8 192 28534 87.85 1577 1552 307.1
A 13 254 21848 66.08 1577 1552 307.1
B 6 159 3332118 11681.54 1544 1513 285.1
B 0 190 165710 575.89 1544 1513 285.1
B 12 111 34054 114.13 1544 1513 285.1
C 3 233 1500101 4398.42 1486 1499 340.7
C 14 238 242681 707.87 1486 1499 340.7
C 10 22 35396 99.49 1486 1499 340.7
D 7 80 922566 2630.41 1508 1471 350.2
D 8 195 428172 1218.55 1508 1471 350.2
D 2 250 191001 541.25 1508 1471 350.2

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