ASTROSAT CZTI

Data Quality Report

Orbit 20160115_G02_021T07_9000000274_level2

Creation date: 2025-10-25T21:40:07.230685
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/AS1G02_021T07_9000000274cztM0_level2.fits modeM0/AS1G02_021T07_9000000274cztM0_level2_quad_clean.evt
Size (bytes)463,305,600604,488,960
Size441.8 MB 576.5 MB
Events in quadrant A2,683,5303,805,103
Events in quadrant B2,666,3363,836,864
Events in quadrant C2,633,9283,604,275
Events in quadrant D2,255,1023,270,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02353620
B02456870
C02276990
D02285530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552732580.466774%
B552732570.464965%
C552732370.428781%
D5527311001.990122%

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 62073 55269 0 0 0.00% 0.00%
B 62073 55271 0 0 0.00% 0.00%
C 62073 55271 0 0 0.00% 0.00%
D 62073 55196 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 2465 11.34 694 650 160.0
A 7 110 2305 10.34 694 650 160.0
A 0 30 1904 7.84 694 650 160.0
B 2 9 2066 11.16 703 670 125.1
B 5 128 1766 8.76 703 670 125.1
B 14 254 1752 8.65 703 670 125.1
C 12 241 1832 7.01 694 643 169.5
C 2 191 1795 6.8 694 643 169.5
C 1 81 1749 6.52 694 643 169.5
D 6 44 1639 6.82 644 590 153.8
D 6 231 1580 6.44 644 590 153.8
D 11 82 1579 6.43 644 590 153.8

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