ASTROSAT CZTI

Data Quality Report

Orbit 40673

Creation date: 2024-06-27T22:18:59.460999
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_029T02_9000005558_40673cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40673cztM0_level2_quad_clean.evt
Size (bytes)330,744,96090,578,880
Size315.4 MB 86.4 MB
Events in quadrant A2,922,154611,649
Events in quadrant B2,842,142630,459
Events in quadrant C3,358,354610,293
Events in quadrant D2,687,675502,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122813
B0121752
C0133952
D0120032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547140.252389%
B5547591.063638%
C5547400.721111%
D554765111.736074%

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 7218 5548 8 8 0.11% 0.14%
B 7218 5548 31 31 0.43% 0.56%
C 7218 5548 34 34 0.47% 0.61%
D 7218 5548 21 21 0.29% 0.38%

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 496638 3943.78 606 593 125.8
A 12 189 40188 314.8 606 593 125.8
A 13 252 21894 169.35 606 593 125.8
B 0 190 145635 1217.1 606 588 119.2
B 0 229 136933 1144.08 606 588 119.2
B 5 255 110892 925.57 606 588 119.2
C 9 187 609538 4313.8 598 603 141.2
C 15 214 242459 1713.35 598 603 141.2
C 14 254 75702 532.01 598 603 141.2
D 2 250 208251 1495.18 555 540 138.9
D 12 191 183695 1318.41 555 540 138.9
D 9 19 48441 344.81 555 540 138.9

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