ASTROSAT CZTI

Data Quality Report

Orbit 09951

Creation date: 2024-06-27T15:52:50.637032
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/AS1G07_016T01_9000001420_09951cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09951cztM0_level2_quad_clean.evt
Size (bytes)830,767,680152,421,120
Size792.3 MB 145.4 MB
Events in quadrant A5,474,302962,102
Events in quadrant B5,959,587968,182
Events in quadrant C5,167,302975,428
Events in quadrant D7,768,803904,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027836
B027832
C027741
D027842

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281814073
B0294454213
C0276673906
D0357865329

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0134
C0131
D0132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116431801.545993%
B116312532.175221%
C116991531.307804%
D115254383.800434%

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 14912 12529 1 1 0.01% 0.01%
B 14912 12500 70 70 0.47% 0.56%
C 14912 12551 0 0 0.00% 0.00%
D 14910 12437 268 268 1.80% 2.15%

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 14 254 201915 724.13 1352 1322 277.0
A 8 15 27237 93.55 1352 1322 277.0
A 15 174 20781 70.25 1352 1322 277.0
B 0 214 194442 751.53 1344 1311 257.0
B 4 81 173711 670.86 1344 1311 257.0
B 4 239 136679 526.76 1344 1311 257.0
C 13 61 9977 28.22 1319 1322 306.7
C 7 247 8563 23.61 1319 1322 306.7
C 14 67 6442 16.7 1319 1322 306.7
D 2 16 679190 2042.77 1279 1244 331.9
D 8 195 679151 2042.65 1279 1244 331.9
D 10 253 457054 1373.44 1279 1244 331.9

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