ASTROSAT CZTI

Data Quality Report

Orbit 07356

Creation date: 2024-06-27T15:18:55.123874
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/AS1G06_157T02_9000001008_07356cztM0_level2.evt modeM0/AS1G06_157T02_9000001008_07356cztM0_level2_quad_clean.evt
Size (bytes)289,874,88058,996,800
Size276.4 MB 56.3 MB
Events in quadrant A2,349,006432,632
Events in quadrant B1,993,620371,411
Events in quadrant C2,226,905358,368
Events in quadrant D1,934,723340,805

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172107408
B0158907288
C0183499107
D02514916632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015469
B015575
C015569
D015676

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138
B0138
C0138
D0148

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40492877.088170%
B4083852.081803%
C3966551.386788%
D3947541.368128%

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 7823 4488 186 186 2.38% 4.14%
B 7716 4543 0 0 0.00% 0.00%
C 7668 4362 0 0 0.00% 0.00%
D 6411 4313 15 15 0.23% 0.35%

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 15 234 502540 5044.53 478 468 99.5
A 3 1 5041 45.95 478 468 99.5
A 0 226 4487 40.38 478 468 99.5
B 0 214 25559 252.93 503 492 99.1
B 4 81 11939 115.5 503 492 99.1
B 12 111 10336 99.33 503 492 99.1
C 9 68 235805 2087.76 472 473 112.7
C 12 80 133351 1178.83 472 473 112.7
C 8 128 5282 42.66 472 473 112.7
D 12 233 68240 576.07 470 454 117.7
D 2 14 29066 243.15 470 454 117.7
D 2 216 25252 210.74 470 454 117.7

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