ASTROSAT CZTI

Data Quality Report

Orbit 15177

Creation date: 2024-06-27T17:04:51.559549
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_068T01_9000002238_15177cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15177cztM0_level2_quad_clean.evt
Size (bytes)891,072,000167,546,880
Size849.8 MB 159.8 MB
Events in quadrant A7,032,3911,070,903
Events in quadrant B6,083,7591,081,468
Events in quadrant C7,072,4491,047,031
Events in quadrant D5,965,9631,025,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296793
B0258792
C0288232
D0263772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122881321.074219%
B122881771.440430%
C122881090.887044%
D122881781.448568%

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 13604 12289 0 0 0.00% 0.00%
B 13604 12290 24 24 0.18% 0.20%
C 13604 12289 0 0 0.00% 0.00%
D 13604 12289 57 57 0.42% 0.46%

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 15 239 1222423 4104.36 1468 1434 297.5
A 12 189 149962 499.28 1468 1434 297.5
A 0 226 12842 38.35 1468 1434 297.5
B 3 64 118663 420.68 1464 1427 278.7
B 4 48 88434 312.21 1464 1427 278.7
B 0 197 56359 197.11 1464 1427 278.7
C 3 233 1497269 4524.93 1425 1429 330.6
C 8 128 10420 27.2 1425 1429 330.6
C 13 61 10183 26.48 1425 1429 330.6
D 2 33 282197 806.01 1427 1385 348.4
D 5 222 83083 234.5 1427 1385 348.4
D 7 223 53104 148.45 1427 1385 348.4

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