ASTROSAT CZTI

Data Quality Report

Orbit 25078

Creation date: 2024-06-27T19:13:34.572760
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_206T01_9000003672_25078cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25078cztM0_level2_quad_clean.evt
Size (bytes)940,867,200172,442,880
Size897.3 MB 164.5 MB
Events in quadrant A6,072,5421,114,467
Events in quadrant B6,398,3131,125,794
Events in quadrant C5,999,5741,070,598
Events in quadrant D9,170,3721,033,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261472
B0268782
C0259212
D0361842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127061351.062490%
B127071751.377194%
C127071901.495239%
D127072541.998898%

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 13881 12707 0 0 0.00% 0.00%
B 13882 12707 28 28 0.20% 0.22%
C 13882 12709 0 0 0.00% 0.00%
D 13882 12709 103 103 0.74% 0.81%

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 34 108534 342.43 1545 1510 312.5
A 13 254 21613 64.32 1545 1510 312.5
A 3 137 14177 40.53 1545 1510 312.5
B 3 64 124509 419.46 1532 1493 293.3
B 0 229 101129 339.74 1532 1493 293.3
B 0 190 76485 255.71 1532 1493 293.3
C 14 238 232906 663.16 1476 1484 349.0
C 7 247 12688 32.11 1476 1484 349.0
C 13 61 10200 24.98 1476 1484 349.0
D 1 52 1057753 2909.28 1492 1450 363.1
D 8 195 946661 2603.31 1492 1450 363.1
D 9 35 842898 2317.52 1492 1450 363.1

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