ASTROSAT CZTI

Data Quality Report

Orbit 14887

Creation date: 2024-06-27T17:00:56.095371
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/AS1T02_054T01_9000002200_14887cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14887cztM0_level2_quad_clean.evt
Size (bytes)1,030,610,880200,465,280
Size982.9 MB 191.2 MB
Events in quadrant A5,992,8031,346,584
Events in quadrant B9,052,7271,244,775
Events in quadrant C6,043,7411,332,856
Events in quadrant D9,249,0221,254,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266000
B0353830
C0262940
D0366300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12917920.712240%
B12918132210.233782%
C12918440.340610%
D1291811248.701037%

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 14462 12921 2 2 0.01% 0.02%
B 14463 12922 1058 1058 7.32% 8.19%
C 14463 12922 2 2 0.01% 0.02%
D 14463 12922 900 900 6.22% 6.96%

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 12 189 145870 480.16 1503 1474 300.7
A 3 1 45628 146.83 1503 1474 300.7
A 4 2 14360 42.85 1503 1474 300.7
B 3 64 3093387 11410.87 1421 1381 271.0
B 0 189 94934 345.25 1421 1381 271.0
B 0 230 52373 188.18 1421 1381 271.0
C 3 233 305109 901.57 1462 1468 336.8
C 0 207 39074 111.66 1462 1468 336.8
C 13 61 10567 27.02 1462 1468 336.8
D 7 254 3787394 11309.0 1389 1351 334.8
D 2 120 56695 165.31 1389 1351 334.8
D 2 234 48097 139.63 1389 1351 334.8

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