ASTROSAT CZTI

Data Quality Report

Orbit 42102

Creation date: 2024-06-27T22:36:51.955113
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_088T08_9000005748_42102cztM0_level2.fits modeM0/AS1A12_088T08_9000005748_42102cztM0_level2_quad_clean.evt
Size (bytes)283,527,36062,651,520
Size270.4 MB 59.7 MB
Events in quadrant A4,328,930411,227
Events in quadrant B1,710,113435,017
Events in quadrant C1,811,538408,990
Events in quadrant D2,340,496366,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154821
B079131
C078921
D097981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38982005.130836%
B389870.179579%
C3898110.282196%
D38981433.668548%

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 3898 3898 136 136 3.49% 3.49%
B 3898 3898 1 1 0.03% 0.03%
C 3898 3898 6 6 0.15% 0.15%
D 3898 3898 111 111 2.85% 2.85%

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 15 222 2356523 26753.57 419 410 88.1
A 10 83 351196 3983.16 419 410 88.1
A 3 137 4776 49.58 419 410 88.1
B 5 255 45477 540.45 421 409 83.4
B 12 111 10570 121.85 421 409 83.4
B 11 111 9794 112.54 421 409 83.4
C 15 214 159409 1644.36 413 414 96.7
C 15 159 30678 312.99 413 414 96.7
C 12 249 5774 55.43 413 414 96.7
D 12 6 486195 4870.91 404 392 99.7
D 10 199 102637 1025.16 404 392 99.7
D 13 249 84954 847.86 404 392 99.7

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