ASTROSAT CZTI

Data Quality Report

Orbit 41135

Creation date: 2024-06-27T22:24:53.109640
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/AS1A12_052T04_9000005602_41135cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41135cztM0_level2_quad_clean.evt
Size (bytes)445,322,880109,169,280
Size424.7 MB 104.1 MB
Events in quadrant A3,556,742746,352
Events in quadrant B4,612,235718,658
Events in quadrant C4,210,815700,889
Events in quadrant D3,576,849666,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147763
B0184102
C0169802
D0154752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6791170.250331%
B67913895.728170%
C67911672.459137%
D6791711.045501%

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 8102 6792 4 4 0.05% 0.06%
B 8102 6792 257 257 3.17% 3.78%
C 8102 6792 138 138 1.70% 2.03%
D 8102 6792 61 61 0.75% 0.90%

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 594597 3956.78 728 713 150.1
A 12 189 81163 536.0 728 713 150.1
A 2 79 45348 297.38 728 713 150.1
B 0 245 1276085 9191.68 711 692 138.8
B 0 186 371432 2671.9 711 692 138.8
B 5 255 90896 650.09 711 692 138.8
C 9 54 926491 5609.74 708 712 165.0
C 15 214 289219 1748.2 708 712 165.0
C 0 10 113399 682.83 708 712 165.0
D 2 16 368809 2127.0 710 689 173.1
D 2 249 155376 893.78 710 689 173.1
D 13 249 153987 885.76 710 689 173.1

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