ASTROSAT CZTI

Data Quality Report

Orbit 14387

Creation date: 2024-06-27T16:54:24.993706
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/AS1G08_075T01_9000002120_14387cztM0_level2.evt modeM0/AS1G08_075T01_9000002120_14387cztM0_level2_quad_clean.evt
Size (bytes)321,793,92063,973,440
Size306.9 MB 61.0 MB
Events in quadrant A2,154,044417,334
Events in quadrant B2,461,354412,152
Events in quadrant C2,659,071400,737
Events in quadrant D2,170,175396,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010513
B010315
C010414
D010818

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107881626
B0117311635
C0130602055
D0113991916

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118
B01512
C095
D0127

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4404120.272480%
B4408912.064428%
C4397130.295656%
D4415290.656852%

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 7778 4454 2 2 0.03% 0.04%
B 7778 4443 80 80 1.03% 1.80%
C 7778 4432 0 0 0.00% 0.00%
D 7778 4453 19 19 0.24% 0.43%

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 15 28007 249.3 547 538 110.2
A 4 2 17929 157.83 547 538 110.2
A 0 226 4930 39.86 547 538 110.2
B 0 229 293395 2901.8 540 528 100.9
B 4 173 48336 473.69 540 528 100.9
B 12 111 11278 106.51 540 528 100.9
C 3 233 614384 5159.45 521 526 119.0
C 3 232 5960 45.67 521 526 119.0
C 3 234 3902 28.38 521 526 119.0
D 2 120 91551 662.87 519 509 137.3
D 10 70 32165 230.48 519 509 137.3
D 10 199 23549 167.75 519 509 137.3

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