ASTROSAT CZTI

Data Quality Report

Orbit 41216

Creation date: 2024-06-27T22:26:03.898473
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/AS1C07_001T12_9000005632_41216cztM0_level2.fits modeM0/AS1C07_001T12_9000005632_41216cztM0_level2_quad_clean.evt
Size (bytes)353,160,00086,788,800
Size336.8 MB 82.8 MB
Events in quadrant A3,078,711595,469
Events in quadrant B3,229,774593,548
Events in quadrant C3,449,615550,197
Events in quadrant D2,906,841521,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122683
B0132042
C0136672
D0123222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5239140.267227%
B52391743.321245%
C52392194.180187%
D5239921.756060%

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 7273 5240 6 6 0.08% 0.11%
B 7273 5240 142 142 1.95% 2.71%
C 7273 5240 214 214 2.94% 4.08%
D 7273 5240 86 86 1.18% 1.64%

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 532699 4647.15 566 554 114.5
A 12 189 305354 2661.78 566 554 114.5
A 0 8 32137 275.81 566 554 114.5
B 0 186 573411 5439.29 555 540 105.3
B 0 245 167303 1583.38 555 540 105.3
B 0 190 138125 1306.34 555 540 105.3
C 14 254 642068 5178.06 536 538 123.9
C 0 10 442016 3563.35 536 538 123.9
C 15 214 224780 1809.95 536 538 123.9
D 13 249 232250 1736.45 549 533 133.4
D 5 222 213080 1592.79 549 533 133.4
D 1 47 137741 1028.22 549 533 133.4

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