ASTROSAT CZTI

Data Quality Report

Orbit 35492

Creation date: 2024-06-27T21:14:12.997874
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/AS1A11_097T22_9000005082_35492cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35492cztM0_level2_quad_clean.evt
Size (bytes)473,135,04090,835,200
Size451.2 MB 86.6 MB
Events in quadrant A3,251,747571,487
Events in quadrant B3,770,807604,500
Events in quadrant C3,712,908617,172
Events in quadrant D3,233,982586,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129253
B0147062
C0143472
D0131402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52962274.286254%
B52964638.742447%
C52962234.210725%
D5296701.321752%

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 9092 5298 158 158 1.74% 2.98%
B 9092 5298 310 310 3.41% 5.85%
C 9092 5298 165 165 1.81% 3.11%
D 9092 5298 55 55 0.60% 1.04%

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 15 169 717513 5850.65 617 606 122.5
A 10 83 127957 1039.31 617 606 122.5
A 9 143 14939 116.97 617 606 122.5
B 4 171 848816 7336.07 620 606 115.6
B 5 172 362477 3129.78 620 606 115.6
B 5 236 86960 746.87 620 606 115.6
C 0 207 454650 3185.55 627 635 142.5
C 0 10 370924 2598.09 627 635 142.5
C 15 214 215707 1509.03 627 635 142.5
D 7 80 243708 1644.57 621 606 147.8
D 13 249 217695 1468.6 621 606 147.8
D 8 195 157583 1061.94 621 606 147.8

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