ASTROSAT CZTI

Data Quality Report

Orbit 21155

Creation date: 2024-06-27T18:24:15.164942
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/AS1C04_001T01_9000003126_21155cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21155cztM0_level2_quad_clean.evt
Size (bytes)617,492,160155,926,080
Size588.9 MB 148.7 MB
Events in quadrant A3,962,8491,061,099
Events in quadrant B4,246,1351,072,741
Events in quadrant C3,949,3291,027,214
Events in quadrant D5,966,239971,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174052
B0178102
C0172872
D0233872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85031171.375985%
B85031001.176056%
C85021031.211480%
D85025266.186780%

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 9748 8505 6 6 0.06% 0.07%
B 9748 8505 6 6 0.06% 0.07%
C 9747 8504 0 0 0.00% 0.00%
D 9747 8504 371 371 3.81% 4.36%

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 5 16 41999 200.7 1014 990 204.3
A 13 254 11622 52.03 1014 990 204.3
A 0 226 8897 38.7 1014 990 204.3
B 0 189 81384 419.35 1010 985 191.7
B 3 64 40950 208.45 1010 985 191.7
B 0 190 40057 203.79 1010 985 191.7
C 14 238 151727 660.81 969 972 228.1
C 3 233 15915 65.5 969 972 228.1
C 13 61 6686 25.05 969 972 228.1
D 1 239 1455844 6269.37 951 919 232.1
D 1 20 217084 931.47 951 919 232.1
D 9 65 150391 644.09 951 919 232.1

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