ASTROSAT CZTI

Data Quality Report

Orbit 13874

Creation date: 2024-06-27T16:47:14.713322
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_115T02_9000002042_13874cztM0_level2.evt modeM0/AS1A04_115T02_9000002042_13874cztM0_level2_quad_clean.evt
Size (bytes)737,084,160137,963,520
Size702.9 MB 131.6 MB
Events in quadrant A4,969,955867,164
Events in quadrant B5,117,172873,294
Events in quadrant C4,933,447861,955
Events in quadrant D6,573,572831,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219842
B0220872
C0219922
D0266842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107511811.683564%
B107512001.860292%
C107511351.255697%
D107512582.399777%

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 11672 10752 0 0 0.00% 0.00%
B 11672 10752 4 4 0.03% 0.04%
C 11672 10752 7 7 0.06% 0.07%
D 11672 10752 104 104 0.89% 0.97%

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 0 23 32630 119.33 1281 1250 263.0
A 0 226 12966 44.55 1281 1250 263.0
A 1 162 11659 39.58 1281 1250 263.0
B 10 244 76707 306.7 1270 1237 246.1
B 0 214 55962 222.39 1270 1237 246.1
B 12 111 30797 120.13 1270 1237 246.1
C 3 233 55954 187.23 1247 1252 292.2
C 14 234 20128 64.61 1247 1252 292.2
C 13 61 8836 25.96 1247 1252 292.2
D 5 222 1403701 4748.41 1235 1203 295.4
D 13 189 210488 708.57 1235 1203 295.4
D 1 52 100732 336.97 1235 1203 295.4

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