ASTROSAT CZTI

Data Quality Report

Orbit 40750

Creation date: 2024-06-27T22:19:58.623875
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_068T02_9000005564_40750cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40750cztM0_level2_quad_clean.evt
Size (bytes)334,840,32089,032,320
Size319.3 MB 84.9 MB
Events in quadrant A2,714,229606,448
Events in quadrant B2,417,893633,900
Events in quadrant C4,234,173584,267
Events in quadrant D2,641,318522,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110243
B0103642
C0158732
D0112712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496990.181123%
B4969160.321996%
C49692885.795935%
D49692755.534313%

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 7063 4970 4 4 0.06% 0.08%
B 7063 4970 7 7 0.10% 0.14%
C 7062 4969 312 312 4.42% 6.28%
D 7063 4969 17 17 0.24% 0.34%

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 461001 3972.48 570 560 115.9
A 12 189 26026 219.71 570 560 115.9
A 6 10 13201 109.06 570 560 115.9
B 4 171 107687 979.06 572 558 109.4
B 5 255 25983 232.36 572 558 109.4
B 0 229 21761 193.78 572 558 109.4
C 9 187 1810751 14188.16 549 553 127.6
C 15 214 213926 1672.4 549 553 127.6
C 0 10 59966 465.67 549 553 127.6
D 2 249 161794 1234.56 533 519 130.6
D 12 191 126635 965.42 533 519 130.6
D 13 249 120082 915.25 533 519 130.6

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