ASTROSAT CZTI

Data Quality Report

Orbit 20161124_C02_018T02_9000000824_level2

Creation date: 2025-11-07T22:44:16.581844
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/AS1C02_018T02_9000000824cztM0_level2.fits modeM0/AS1C02_018T02_9000000824cztM0_level2_quad_clean.evt
Size (bytes)337,155,840337,605,120
Size321.5 MB 322.0 MB
Events in quadrant A2,028,2141,994,793
Events in quadrant B1,964,5442,002,594
Events in quadrant C2,023,7701,975,605
Events in quadrant D1,670,4841,728,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0878050
B0838720
C0755670
D01093940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07480
C07480
D07480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367326381.736905%
B3673110042.733386%
C367353470.944603%
D3673226667.257977%

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 46564 36729 0 0 0.00% 0.00%
B 46564 36718 0 0 0.00% 0.00%
C 46563 36735 0 0 0.00% 0.00%
D 46564 36619 0 0 0.00% 0.00%

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 0 29 1947 10.59 527 489 137.7
A 7 110 1637 8.34 527 489 137.7
A 9 19 1563 7.8 527 489 137.7
B 2 9 1729 11.64 517 491 106.4
B 12 226 1416 8.69 517 491 106.4
B 14 254 1355 8.12 517 491 106.4
C 1 81 1472 6.76 534 492 145.0
C 12 241 1440 6.54 534 492 145.0
C 1 80 1435 6.5 534 492 145.0
D 6 231 1280 6.46 476 430 131.5
D 3 14 1278 6.45 476 430 131.5
D 11 82 1257 6.29 476 430 131.5

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