ASTROSAT CZTI

Data Quality Report

Orbit 25676

Creation date: 2024-06-27T19:20:17.982533
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/AS1A09_043T01_9000003744_25676cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25676cztM0_level2_quad_clean.evt
Size (bytes)490,210,56096,471,360
Size467.5 MB 92.0 MB
Events in quadrant A3,333,614642,237
Events in quadrant B3,352,900653,165
Events in quadrant C3,197,529604,560
Events in quadrant D4,533,334580,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138160
B0139180
C0134570
D0177390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313490.776176%
B6313590.934579%
C6313731.156344%
D63131602.534453%

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 7553 6314 0 0 0.00% 0.00%
B 7553 6313 2 2 0.03% 0.03%
C 7553 6313 0 0 0.00% 0.00%
D 7553 6314 119 119 1.58% 1.88%

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 8 192 122036 732.54 832 819 165.5
A 13 254 9557 52.81 832 819 165.5
A 3 137 7297 39.15 832 819 165.5
B 3 112 79532 501.77 830 814 156.9
B 12 111 18241 111.08 830 814 156.9
B 11 111 16414 99.44 830 814 156.9
C 14 238 126935 690.78 784 790 182.6
C 3 233 11553 58.94 784 790 182.6
C 13 61 5510 25.85 784 790 182.6
D 8 195 620535 3234.39 784 761 191.6
D 1 52 487052 2537.79 784 761 191.6
D 5 233 160132 831.7 784 761 191.6

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