ASTROSAT CZTI

Data Quality Report

Orbit 42783

Creation date: 2024-06-27T22:44:11.833633
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/AS1A05_013T01_9000005822_42783cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42783cztM0_level2_quad_clean.evt
Size (bytes)328,089,60098,141,760
Size312.9 MB 93.6 MB
Events in quadrant A3,185,593658,617
Events in quadrant B2,613,393660,409
Events in quadrant C2,818,779648,160
Events in quadrant D3,070,113594,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127542
B0119412
C0119872
D0132752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863120.204673%
B5864150.255798%
C586450.085266%
D5864691.176671%

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 8939 5865 4 4 0.04% 0.07%
B 8940 5866 8 8 0.09% 0.14%
C 8940 5866 1 1 0.01% 0.02%
D 8940 5866 73 73 0.82% 1.24%

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 619404 4656.03 651 638 132.9
A 12 189 22329 163.22 651 638 132.9
A 13 6 12049 85.86 651 638 132.9
B 5 172 26269 204.86 642 624 125.2
B 0 229 25291 197.05 642 624 125.2
B 12 111 15761 120.92 642 624 125.2
C 15 214 237833 1587.15 637 640 149.4
C 14 254 84666 562.25 637 640 149.4
C 7 220 4243 24.11 637 640 149.4
D 12 233 203287 1301.05 636 617 155.8
D 2 249 192019 1228.72 636 617 155.8
D 5 171 147212 941.07 636 617 155.8

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