ASTROSAT CZTI

Data Quality Report

Orbit 44500

Creation date: 2024-06-27T23:03:51.826692
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/AS1A13_072T03_9000006000_44500cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44500cztM0_level2_quad_clean.evt
Size (bytes)766,866,240172,149,120
Size731.3 MB 164.2 MB
Events in quadrant A7,482,7021,177,251
Events in quadrant B7,820,8861,104,260
Events in quadrant C5,528,4351,152,894
Events in quadrant D6,704,7491,018,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305882
B0312822
C0242482
D0280065

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109681080.984683%
B10969110910.110311%
C10969570.519646%
D109685354.877826%

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 13018 10970 13 13 0.10% 0.12%
B 13019 10971 822 822 6.31% 7.49%
C 13019 10971 33 33 0.25% 0.30%
D 13018 10970 394 394 3.03% 3.59%

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 10 83 2779268 11217.24 1194 1168 247.7
A 13 248 83498 332.43 1194 1168 247.7
A 0 243 21865 83.57 1194 1168 247.7
B 5 235 3022125 13457.76 1148 1114 224.5
B 5 172 89127 392.07 1148 1114 224.5
B 4 170 55485 242.21 1148 1114 224.5
C 3 233 625080 2271.5 1168 1177 274.7
C 14 254 268623 973.71 1168 1177 274.7
C 12 250 34140 120.01 1168 1177 274.7
D 1 52 1115021 3894.76 1136 1101 286.0
D 2 249 928949 3244.17 1136 1101 286.0
D 13 249 119185 412.87 1136 1101 286.0

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