ASTROSAT CZTI

Data Quality Report

Orbit 39254

Creation date: 2024-06-27T22:02:20.305333
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_093T02_9000005452_39254cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39254cztM0_level2_quad_clean.evt
Size (bytes)435,893,76091,324,800
Size415.7 MB 87.1 MB
Events in quadrant A2,821,114636,913
Events in quadrant B4,087,369628,230
Events in quadrant C2,605,073618,760
Events in quadrant D6,185,363488,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119483
B0158942
C0113172
D0222252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5614140.249377%
B56142865.094407%
C561440.071250%
D5614102018.168864%

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 7346 5615 3 3 0.04% 0.05%
B 7346 5615 196 196 2.67% 3.49%
C 7346 5615 0 0 0.00% 0.00%
D 7346 5615 780 780 10.62% 13.89%

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 431056 3400.14 616 603 126.6
A 13 254 6683 48.03 616 603 126.6
A 3 137 6661 47.85 616 603 126.6
B 5 184 1169850 10068.92 603 586 116.1
B 5 172 406993 3499.71 603 586 116.1
B 0 190 82278 703.48 603 586 116.1
C 15 214 252827 1789.93 601 604 140.9
C 0 10 5209 32.68 601 604 140.9
C 13 61 4140 25.09 601 604 140.9
D 12 235 3851523 28887.42 550 534 133.3
D 2 250 73243 545.41 550 534 133.3
D 12 227 38985 288.43 550 534 133.3

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