ASTROSAT CZTI

Data Quality Report

Orbit 25342

Creation date: 2024-06-27T19:16:33.626459
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_059T01_9000003706_25342cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25342cztM0_level2_quad_clean.evt
Size (bytes)504,054,72071,496,000
Size480.7 MB 68.2 MB
Events in quadrant A3,344,809436,748
Events in quadrant B3,343,577443,091
Events in quadrant C3,535,829415,509
Events in quadrant D4,592,587408,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139650
B0139890
C0146040
D0184780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615741.118670%
B6615691.043084%
C66151021.541950%
D6615841.269841%

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 7710 6616 17 17 0.22% 0.26%
B 7710 6616 1 1 0.01% 0.02%
C 7710 6616 8 8 0.10% 0.12%
D 7710 6616 32 32 0.42% 0.48%

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 59902 349.3 849 835 169.1
A 6 16 11419 62.59 849 835 169.1
A 13 254 9675 52.28 849 835 169.1
B 3 112 29700 181.34 843 823 159.2
B 12 111 19525 117.44 843 823 159.2
B 11 111 17673 105.81 843 823 159.2
C 9 54 204615 1083.69 803 811 188.1
C 14 238 129665 685.16 803 811 188.1
C 3 233 69615 365.85 803 811 188.1
D 1 52 804036 4107.37 815 793 195.6
D 8 195 300086 1530.43 815 793 195.6
D 7 238 139071 707.08 815 793 195.6

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