ASTROSAT CZTI

Data Quality Report

Orbit 16635

Creation date: 2024-06-27T17:25:38.292479
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/AS1C04_007T07_9000002452_16635cztM0_level2.evt modeM0/AS1C04_007T07_9000002452_16635cztM0_level2_quad_clean.evt
Size (bytes)486,025,92069,428,160
Size463.5 MB 66.2 MB
Events in quadrant A3,974,895409,880
Events in quadrant B3,154,769432,363
Events in quadrant C3,707,329416,629
Events in quadrant D3,465,956414,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159762
B0133801
C0147461
D0144811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61353996.503667%
B61351111.809291%
C61351822.966585%
D61351332.167889%

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 6381 6137 250 250 3.92% 4.07%
B 6381 6137 3 3 0.05% 0.05%
C 6381 6137 0 0 0.00% 0.00%
D 6381 6137 99 99 1.55% 1.61%

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 15 174 1198898 8155.91 720 705 146.9
A 0 226 6398 38.75 720 705 146.9
A 12 194 5281 31.14 720 705 146.9
B 15 35 122357 843.59 737 718 144.2
B 0 198 46047 314.36 737 718 144.2
B 0 229 26332 177.64 737 718 144.2
C 3 233 776432 4632.73 705 710 167.4
C 14 238 108515 643.83 705 710 167.4
C 7 247 76590 453.17 705 710 167.4
D 1 52 667464 3753.68 718 698 177.6
D 5 222 54379 302.21 718 698 177.6
D 2 234 25620 140.3 718 698 177.6

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