ASTROSAT CZTI

Data Quality Report

Orbit 30266

Creation date: 2024-06-27T20:12:53.236353
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/AS1A10_007T01_9000004350_30266cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30266cztM0_level2_quad_clean.evt
Size (bytes)774,066,240107,576,640
Size738.2 MB 102.6 MB
Events in quadrant A3,745,386757,874
Events in quadrant B11,872,399567,418
Events in quadrant C3,846,877759,102
Events in quadrant D3,559,405740,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152633
B0395742
C0154952
D0147272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192871.405039%
B6192398164.292636%
C61923415.507106%
D6192250.403747%

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 7497 6193 19 19 0.25% 0.31%
B 7497 6193 3089 3089 41.20% 49.88%
C 7497 6193 1 1 0.01% 0.02%
D 7497 6193 11 11 0.15% 0.18%

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 14 239 488831 2935.18 836 821 166.3
A 8 192 23538 136.63 836 821 166.3
A 13 254 11248 62.71 836 821 166.3
B 6 36 7798713 65663.49 631 616 118.8
B 6 159 1430144 12037.27 631 616 118.8
B 0 229 101205 847.0 631 616 118.8
C 3 233 363821 1899.28 817 828 191.1
C 14 238 190715 993.54 817 828 191.1
C 14 254 86086 446.09 817 828 191.1
D 5 222 142921 711.5 820 806 199.7
D 2 250 127366 633.62 820 806 199.7
D 1 52 70458 348.71 820 806 199.7

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