ASTROSAT CZTI

Data Quality Report

Orbit 12209

Creation date: 2024-06-27T16:23:51.620907
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_066T01_9000001802_12209cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12209cztM0_level2_quad_clean.evt
Size (bytes)268,191,36048,473,280
Size255.8 MB 46.2 MB
Events in quadrant A2,858,097322,204
Events in quadrant B2,341,041296,819
Events in quadrant C1,269,482326,494
Events in quadrant D1,455,770315,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105282
B089161
C060791
D065431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28852498.630849%
B288551617.885615%
C2885421.455806%
D2885471.629116%

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 3186 2888 100 100 3.14% 3.46%
B 3186 2888 236 236 7.41% 8.17%
C 3186 2888 20 20 0.63% 0.69%
D 3186 2888 29 29 0.91% 1.00%

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 13 251 1391083 21655.88 303 297 64.2
A 1 162 83986 1303.12 303 297 64.2
A 9 143 70789 1097.63 303 297 64.2
B 4 239 968808 17916.81 281 274 54.1
B 15 204 168783 3117.23 281 274 54.1
B 11 51 36547 671.01 281 274 54.1
C 5 112 56204 778.03 302 303 71.8
C 15 208 9259 124.65 302 303 71.8
C 0 207 6273 83.09 302 303 71.8
D 1 52 73655 997.68 297 286 73.5
D 10 199 52441 709.21 297 286 73.5
D 13 249 46152 623.69 297 286 73.5

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