ASTROSAT CZTI

Data Quality Report

Orbit 30660

Creation date: 2024-06-27T20:18:15.636456
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/AS1C05_007T01_9000004418_30660cztM0_level2.evt modeM0/AS1C05_007T01_9000004418_30660cztM0_level2_quad_clean.evt
Size (bytes)1,010,675,520133,053,120
Size963.9 MB 126.9 MB
Events in quadrant A5,009,902913,395
Events in quadrant B7,042,264901,781
Events in quadrant C6,136,160849,007
Events in quadrant D11,847,430772,818

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200042
B0265282
C0245592
D0412162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85311461.711405%
B85312372.778103%
C85312803.282147%
D8531153918.040089%

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 9871 8532 31 31 0.31% 0.36%
B 9871 8532 10 10 0.10% 0.12%
C 9871 8532 15 15 0.15% 0.18%
D 9871 8532 1447 1447 14.66% 16.96%

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 0 13 302536 1260.81 1214 1196 239.0
A 12 96 21028 82.98 1214 1196 239.0
A 13 254 15507 59.88 1214 1196 239.0
B 6 159 2315015 10555.15 1182 1161 219.2
B 0 190 64363 288.31 1182 1161 219.2
B 12 111 25935 113.01 1182 1161 219.2
C 3 233 1387259 5313.21 1134 1148 260.9
C 14 238 186062 708.81 1134 1148 260.9
C 0 10 86488 327.12 1134 1148 260.9
D 8 195 6873368 24009.14 1110 1092 286.2
D 10 253 324402 1129.52 1110 1092 286.2
D 12 227 131388 455.21 1110 1092 286.2

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