ASTROSAT CZTI

Data Quality Report

Orbit 51378

Creation date: 2025-03-29T01:04:05.843379
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/AS1C07_001T03_9000006456_51378cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51378cztM0_level2_quad_clean.evt
Size (bytes)198,745,92017,498,880
Size189.5 MB 16.7 MB
Events in quadrant A1,105,953134,649
Events in quadrant B800,578159,948
Events in quadrant C3,156,20129,157
Events in quadrant D2,188,054106,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326
B0293
C0315
D0271

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04415270
B03477209
C010850556
D07778353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134
B0112
C0101
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13391279.484690%
B1338171.270553%
C1337111083.021690%
D133033525.187970%

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 1344 1342 96 96 7.14% 7.15%
B 1343 1343 5 5 0.37% 0.37%
C 1342 1338 1054 1054 78.54% 78.77%
D 1343 1339 307 307 22.86% 22.93%

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 4 175 272399 6896.24 154 149 39.5
A 12 3 88331 2233.7 154 149 39.5
A 4 3 44287 1118.04 154 149 39.5
B 4 81 131515 3652.67 160 154 36.0
B 0 216 16796 462.75 160 154 36.0
B 8 128 4278 114.67 160 154 36.0
C 7 220 2200827 108068.81 69 68 20.4
C 4 12 380207 18666.82 69 68 20.4
C 15 179 167880 8240.45 69 68 20.4
D 8 176 703515 16967.56 147 141 41.5
D 11 176 640020 15435.86 147 141 41.5
D 6 42 110989 2674.0 147 141 41.5

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