ASTROSAT CZTI

Data Quality Report

Orbit 42506

Creation date: 2024-06-27T22:40:59.319015
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/AS1C07_001T10_9000005806_42506cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42506cztM0_level2_quad_clean.evt
Size (bytes)339,364,80088,482,240
Size323.6 MB 84.4 MB
Events in quadrant A3,029,778603,368
Events in quadrant B2,747,642595,300
Events in quadrant C2,576,478569,385
Events in quadrant D3,790,487535,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122802
B0118831
C0111861
D0149301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5365130.242311%
B5365330.615098%
C536570.130475%
D53661312.441297%

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 7277 5366 3 3 0.04% 0.06%
B 7277 5366 23 23 0.32% 0.43%
C 7277 5366 5 5 0.07% 0.09%
D 7278 5367 118 118 1.62% 2.20%

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 600758 5126.64 571 560 117.1
A 12 189 177884 1514.63 571 560 117.1
A 13 248 25518 213.18 571 560 117.1
B 0 229 402060 3727.4 561 546 107.7
B 0 245 80086 738.4 561 546 107.7
B 15 35 20172 182.2 561 546 107.7
C 15 214 240510 1868.36 553 555 128.4
C 9 54 148499 1151.94 553 555 128.4
C 0 239 8733 63.68 553 555 128.4
D 1 52 644556 4766.05 556 540 135.1
D 12 233 289575 2139.01 556 540 135.1
D 10 118 223860 1652.68 556 540 135.1

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