ASTROSAT CZTI

Data Quality Report

Orbit 18202

Creation date: 2024-06-27T17:46:39.366813
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/AS1A05_160T02_9000002710_18202cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18202cztM0_level2_quad_clean.evt
Size (bytes)102,193,9205,607,360
Size97.5 MB 5.3 MB
Events in quadrant A564,33224,465
Events in quadrant B598,04624,415
Events in quadrant C858,91918,634
Events in quadrant D1,000,77922,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023003
B023995
C0321312
D037391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1024242.343750%
B1024555.371094%
C102419418.945312%
D1026626.042885%

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 1380 1026 0 0 0.00% 0.00%
B 1381 1027 3 3 0.22% 0.29%
C 1381 1027 57 57 4.13% 5.55%
D 1381 1027 9 9 0.65% 0.88%

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 15 174 5768 176.98 145 141 31.8
A 0 226 1310 36.77 145 141 31.8
A 12 194 1154 31.86 145 141 31.8
B 7 220 19083 621.35 144 140 30.5
B 5 172 4432 140.78 144 140 30.5
B 12 111 3265 102.5 144 140 30.5
C 4 254 313329 9528.86 130 130 32.9
C 14 238 19490 589.01 130 130 32.9
C 3 233 14122 425.7 130 130 32.9
D 5 222 262209 7168.66 138 133 36.6
D 7 238 174620 4772.81 138 133 36.6
D 1 52 12508 338.5 138 133 36.6

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