ASTROSAT CZTI

Data Quality Report

Orbit 23004

Creation date: 2024-06-27T18:48:36.008237
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/AS1A08_004T03_9000003400_23004cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23004cztM0_level2_quad_clean.evt
Size (bytes)534,738,24087,482,880
Size510.0 MB 83.4 MB
Events in quadrant A3,561,888541,704
Events in quadrant B3,702,955549,928
Events in quadrant C3,862,322526,117
Events in quadrant D4,557,630508,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154262
B0156373
C0161992
D0183072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75021171.559584%
B75011822.426343%
C75012623.492868%
D75022713.612370%

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 8512 7504 0 0 0.00% 0.00%
B 8511 7503 2 2 0.02% 0.03%
C 8511 7503 77 77 0.90% 1.03%
D 8512 7504 214 214 2.51% 2.85%

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 13 254 11189 54.92 921 898 187.4
A 3 137 8326 39.64 921 898 187.4
A 0 226 7988 37.83 921 898 187.4
B 0 189 44300 243.06 919 894 178.6
B 0 190 24457 131.95 919 894 178.6
B 12 111 22080 118.64 919 894 178.6
C 10 223 249569 1202.69 881 884 206.8
C 14 238 140666 676.02 881 884 206.8
C 7 247 20424 94.5 881 884 206.8
D 12 227 377436 1717.19 893 868 219.3
D 1 239 343473 1562.31 893 868 219.3
D 1 52 217434 987.56 893 868 219.3

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