ASTROSAT CZTI

Data Quality Report

Orbit 40040

Creation date: 2024-06-27T22:11:35.115242
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_054T03_9000005516_40040cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40040cztM0_level2_quad_clean.evt
Size (bytes)317,577,60090,285,120
Size302.9 MB 86.1 MB
Events in quadrant A2,913,043607,015
Events in quadrant B2,335,636643,255
Events in quadrant C3,204,730597,634
Events in quadrant D2,916,311538,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117033
B0101592
C0127212
D0121442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4955801.614531%
B4955160.322906%
C49551032.078708%
D49551262.542886%

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 7047 4956 48 48 0.68% 0.97%
B 7047 4956 3 3 0.04% 0.06%
C 7047 4956 92 92 1.31% 1.86%
D 7047 4956 99 99 1.40% 2.00%

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 10 83 430183 3741.34 561 551 114.8
A 13 248 245477 2132.88 561 551 114.8
A 10 255 22502 191.15 561 551 114.8
B 5 32 33466 306.01 569 556 107.5
B 0 230 23331 211.77 569 556 107.5
B 0 221 15457 138.56 569 556 107.5
C 9 187 757523 5939.91 550 555 127.4
C 15 214 217855 1705.14 550 555 127.4
C 14 254 38949 301.27 550 555 127.4
D 12 227 556328 4261.89 539 526 130.4
D 13 249 110310 841.82 539 526 130.4
D 2 250 81034 617.34 539 526 130.4

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