ASTROSAT CZTI

Data Quality Report

Orbit 37283

Creation date: 2024-06-27T21:37:51.758367
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_103T03_9000005296_37283cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37283cztM0_level2_quad_clean.evt
Size (bytes)121,610,88030,326,400
Size116.0 MB 28.9 MB
Events in quadrant A817,792198,891
Events in quadrant B845,303198,855
Events in quadrant C882,954203,786
Events in quadrant D1,019,088192,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036051
B035691
C038001
D043111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169250.295508%
B1692100.591017%
C1692321.891253%
D1692915.378251%

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 1692 1692 2 2 0.12% 0.12%
B 1692 1692 4 4 0.24% 0.24%
C 1692 1692 29 29 1.71% 1.71%
D 1692 1692 76 76 4.49% 4.49%

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 114157 2974.5 178 174 38.3
A 9 143 4440 111.33 178 174 38.3
A 13 254 2920 71.66 178 174 38.3
B 0 230 80679 2215.84 177 172 36.3
B 0 213 32997 903.46 177 172 36.3
B 0 218 9394 253.82 177 172 36.3
C 0 10 110834 2666.68 169 169 41.5
C 15 214 74077 1780.95 169 169 41.5
C 14 254 25254 604.47 169 169 41.5
D 13 249 194490 4618.87 166 161 42.1
D 2 249 128465 3049.57 166 161 42.1
D 5 171 17462 411.22 166 161 42.1

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