ASTROSAT CZTI

Data Quality Report

Orbit 16784

Creation date: 2024-06-27T17:27:42.125254
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_004T02_9000002490_16784cztM0_level2.evt modeM0/AS1A05_004T02_9000002490_16784cztM0_level2_quad_clean.evt
Size (bytes)618,652,80099,141,120
Size590.0 MB 94.5 MB
Events in quadrant A4,732,628629,391
Events in quadrant B3,682,876641,624
Events in quadrant C3,812,322624,097
Events in quadrant D6,009,614594,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190651
B0158591
C0161251
D0230511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73682052.782302%
B7368660.895765%
C7368951.289359%
D73683815.171010%

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 7849 7370 111 111 1.41% 1.51%
B 7849 7370 12 12 0.15% 0.16%
C 7849 7370 9 9 0.11% 0.12%
D 7849 7370 289 289 3.68% 3.92%

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 15 174 1454996 8435.69 852 833 172.4
A 0 226 7484 38.58 852 833 172.4
A 12 194 6244 31.39 852 833 172.4
B 15 35 131131 793.67 859 837 164.2
B 0 229 89225 538.41 859 837 164.2
B 0 189 34022 202.14 859 837 164.2
C 3 233 341547 1733.52 833 839 196.5
C 14 238 127617 645.05 833 839 196.5
C 0 207 91540 461.49 833 839 196.5
D 1 52 2554971 12506.2 827 800 204.2
D 11 176 131534 640.12 827 800 204.2
D 12 218 75870 367.57 827 800 204.2

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