ASTROSAT CZTI

Data Quality Report

Orbit 11442

Creation date: 2024-06-27T16:12:49.420040
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/AS1A04_021T02_9000001676_11442cztM0_level2.evt modeM0/AS1A04_021T02_9000001676_11442cztM0_level2_quad_clean.evt
Size (bytes)1,048,193,280155,413,440
Size999.6 MB 148.2 MB
Events in quadrant A7,025,068935,472
Events in quadrant B8,842,767915,348
Events in quadrant C6,021,8481,015,919
Events in quadrant D8,958,491923,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294464
B0351493
C0271053
D0359513

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132631050.791676%
B132637235.451255%
C13263520.392068%
D132637595.722687%

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 14679 13267 14 14 0.10% 0.11%
B 14679 13267 390 390 2.66% 2.94%
C 14679 13267 4 4 0.03% 0.03%
D 14679 13266 643 643 4.38% 4.85%

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 1 162 333078 1052.64 1539 1502 315.0
A 1 178 202457 637.96 1539 1502 315.0
A 1 161 169562 533.53 1539 1502 315.0
B 4 239 2405665 8299.44 1518 1480 289.7
B 15 204 110539 376.48 1518 1480 289.7
B 3 189 94256 320.27 1518 1480 289.7
C 14 234 26041 68.5 1534 1542 357.6
C 12 4 12617 30.97 1534 1542 357.6
C 13 61 11193 26.99 1534 1542 357.6
D 1 52 1860798 5317.72 1463 1424 349.7
D 2 33 550035 1569.0 1463 1424 349.7
D 9 85 186361 528.91 1463 1424 349.7

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