ASTROSAT CZTI

Data Quality Report

Orbit 27284

Creation date: 2024-06-27T19:38:25.767055
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/AS1T03_243T01_9000003918_27284cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27284cztM0_level2_quad_clean.evt
Size (bytes)469,281,60099,028,800
Size447.5 MB 94.4 MB
Events in quadrant A2,925,250691,589
Events in quadrant B3,044,841695,761
Events in quadrant C2,827,867642,282
Events in quadrant D5,061,164604,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120580
B0124330
C0117030
D0185670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52061052.016904%
B5190971.868979%
C51821212.335006%
D519570713.609240%

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 7180 5276 4 4 0.06% 0.08%
B 7180 5270 10 10 0.14% 0.19%
C 7180 5261 5 5 0.07% 0.10%
D 7179 5271 590 590 8.22% 11.19%

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 13 170 41853 277.94 747 736 147.9
A 13 254 7771 47.55 747 736 147.9
A 3 137 6429 38.48 747 736 147.9
B 10 245 118880 862.73 728 713 137.0
B 15 32 72217 522.04 728 713 137.0
B 12 111 15711 109.5 728 713 137.0
C 14 238 113088 709.48 689 695 158.4
C 15 208 29238 180.18 689 695 158.4
C 13 61 4800 25.91 689 695 158.4
D 12 233 1813577 11168.08 683 670 162.3
D 1 52 532410 3275.69 683 670 162.3
D 2 250 71573 436.78 683 670 162.3

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