ASTROSAT CZTI

Data Quality Report

Orbit 38624

Creation date: 2024-06-27T21:54:16.225837
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_052T04_9000005388_38624cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38624cztM0_level2_quad_clean.evt
Size (bytes)549,812,16087,223,680
Size524.3 MB 83.2 MB
Events in quadrant A3,099,704650,888
Events in quadrant B4,355,304628,877
Events in quadrant C3,101,624633,460
Events in quadrant D9,369,729343,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124543
B0165312
C0126132
D0316212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485230.419325%
B54853636.618049%
C5485781.422060%
D5486247545.114838%

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 7368 5486 18 18 0.24% 0.33%
B 7368 5486 314 314 4.26% 5.72%
C 7368 5486 76 76 1.03% 1.39%
D 7369 5487 2556 2556 34.69% 46.58%

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 474745 3752.38 626 616 126.4
A 7 16 97689 768.26 626 616 126.4
A 12 189 35169 273.46 626 616 126.4
B 4 171 1187424 10203.77 611 595 116.3
B 5 184 268903 2306.78 611 595 116.3
B 0 186 89092 760.85 611 595 116.3
C 14 254 486473 3456.12 600 603 140.6
C 15 214 228783 1623.1 600 603 140.6
C 0 10 24295 168.53 600 603 140.6
D 12 227 5091696 43777.23 472 459 116.3
D 2 249 1051247 9035.25 472 459 116.3
D 2 16 529322 4547.45 472 459 116.3

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