ASTROSAT CZTI

Data Quality Report

Orbit 00667

Creation date: 2024-06-27T14:01:17.446678
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/AS1P01_124T01_9000000094_00667cztM0_level2.evt modeM0/AS1P01_124T01_9000000094_00667cztM0_level2_quad_clean.evt
Size (bytes)677,286,72038,278,080
Size645.9 MB 36.5 MB
Events in quadrant A5,089,660217,511
Events in quadrant B5,450,568216,602
Events in quadrant C4,552,907217,160
Events in quadrant D5,134,149206,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181491
B0192391
C0165481
D0183071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A426420.046904%
B4264902.110694%
C426430.070356%
D4264511.196060%

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 6420 4265 89 89 1.39% 2.09%
B 6420 4265 236 236 3.68% 5.53%
C 6420 4265 36 36 0.56% 0.84%
D 6420 4265 207 207 3.22% 4.85%

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 14 79 42331 141.61 1293 1278 289.9
A 12 236 17602 56.31 1293 1278 289.9
A 0 238 13418 41.87 1293 1278 289.9
B 5 191 292777 968.96 1271 1280 300.8
B 7 221 157232 518.4 1271 1280 300.8
B 4 172 58196 189.19 1271 1280 300.8
C 9 52 40959 125.25 1144 1184 317.6
C 15 241 11391 32.14 1144 1184 317.6
C 5 249 4622 10.83 1144 1184 317.6
D 12 237 178198 501.65 1123 1166 352.9
D 1 4 131199 368.47 1123 1166 352.9
D 12 233 111788 313.47 1123 1166 352.9

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