ASTROSAT CZTI

Data Quality Report

Orbit 12695

Creation date: 2024-06-27T16:31:11.402538
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/AS1A04_174T01_9000001876_12695cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12695cztM0_level2_quad_clean.evt
Size (bytes)484,004,16083,378,880
Size461.6 MB 79.5 MB
Events in quadrant A2,906,263558,661
Events in quadrant B4,960,048477,522
Events in quadrant C2,861,088551,606
Events in quadrant D3,526,647521,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124192
B0185511
C0123041
D0143051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5953420.705527%
B595382213.808164%
C5953300.503948%
D59531392.334957%

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 7194 5957 0 0 0.00% 0.00%
B 7194 5956 600 600 8.34% 10.07%
C 7194 5957 1 1 0.01% 0.02%
D 7194 5956 105 105 1.46% 1.76%

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 8 15 23804 153.66 743 729 150.2
A 12 189 18900 121.0 743 729 150.2
A 7 16 9219 56.54 743 729 150.2
B 4 239 2029364 15904.78 676 665 127.6
B 0 85 200560 1567.16 676 665 127.6
B 0 219 29499 226.06 676 665 127.6
C 15 208 47518 278.17 721 730 168.2
C 13 61 5382 27.66 721 730 168.2
C 1 5 3335 15.49 721 730 168.2
D 1 52 740759 4297.61 714 696 172.2
D 10 157 31712 180.11 714 696 172.2
D 2 234 23058 129.86 714 696 172.2

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