ASTROSAT CZTI

Data Quality Report

Orbit 12362

Creation date: 2024-06-27T16:26:06.829097
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_130T04_9000001832_12362cztM0_level2.evt modeM0/AS1A04_130T04_9000001832_12362cztM0_level2_quad_clean.evt
Size (bytes)797,146,560128,450,880
Size760.2 MB 122.5 MB
Events in quadrant A7,225,308798,015
Events in quadrant B5,851,322818,133
Events in quadrant C4,893,904802,335
Events in quadrant D5,481,693765,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284193
B0236122
C0212512
D0228572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101913573.503091%
B101913383.316652%
C101911171.148072%
D101911891.854578%

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 12602 10194 78 78 0.62% 0.77%
B 12602 10194 86 86 0.68% 0.84%
C 12602 10194 28 28 0.22% 0.27%
D 12602 10194 71 71 0.56% 0.70%

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 8 15 968347 3768.95 1264 1239 256.6
A 13 251 571382 2221.92 1264 1239 256.6
A 1 162 337980 1312.32 1264 1239 256.6
B 4 239 653180 2772.47 1254 1225 235.2
B 10 245 106244 446.6 1254 1225 235.2
B 0 219 43911 181.52 1254 1225 235.2
C 14 234 76860 271.89 1217 1222 278.2
C 15 208 69655 245.99 1217 1222 278.2
C 13 61 8939 27.74 1217 1222 278.2
D 1 52 501592 1734.79 1222 1187 288.5
D 13 104 89473 306.07 1222 1187 288.5
D 9 85 66340 225.87 1222 1187 288.5

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