ASTROSAT CZTI

Data Quality Report

Orbit 36571

Creation date: 2024-06-27T21:28:35.654200
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/AS1A11_097T17_9000005222_36571cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36571cztM0_level2_quad_clean.evt
Size (bytes)552,395,52075,876,480
Size526.8 MB 72.4 MB
Events in quadrant A2,920,649488,306
Events in quadrant B3,503,119482,617
Events in quadrant C3,686,469473,411
Events in quadrant D6,208,319429,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126783
B0143632
C0147062
D0226322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A606490.148417%
B6064450.742084%
C60642233.677441%
D606470211.576517%

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 6065 4 4 0.05% 0.07%
B 7346 6065 19 19 0.26% 0.31%
C 7346 6065 155 155 2.11% 2.56%
D 7346 6065 574 574 7.81% 9.46%

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 221539 1597.37 684 670 138.3
A 15 223 49930 356.26 684 670 138.3
A 13 254 8336 55.44 684 670 138.3
B 5 172 292897 2230.81 678 658 131.0
B 4 232 180140 1370.08 678 658 131.0
B 0 219 102264 775.61 678 658 131.0
C 0 10 435088 2828.52 658 663 153.6
C 14 254 337877 2195.58 658 663 153.6
C 15 214 253804 1648.19 658 663 153.6
D 12 16 1389467 8788.4 642 624 158.0
D 12 235 605205 3825.7 642 624 158.0
D 1 20 564428 3567.67 642 624 158.0

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