ASTROSAT CZTI

Data Quality Report

Orbit 28741

Creation date: 2024-06-27T19:55:39.962507
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/AS1A10_123T07_9000004124_28741cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28741cztM0_level2_quad_clean.evt
Size (bytes)208,880,64018,555,840
Size199.2 MB 17.7 MB
Events in quadrant A1,056,350106,154
Events in quadrant B1,591,666104,902
Events in quadrant C1,547,09599,973
Events in quadrant D1,989,254100,745

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114039215545424846
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044061
B060841
C060841
D073211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2055190.924574%
B20551205.839416%
C20551085.255474%
D20551678.126521%

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 2055 2055 2 2 0.10% 0.10%
B 2055 2055 46 46 2.24% 2.24%
C 2055 2055 1 1 0.05% 0.05%
D 2055 2055 103 103 5.01% 5.01%

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 14 239 39556 718.01 260 254 54.7
A 15 174 8585 152.2 260 254 54.7
A 13 254 4476 77.13 260 254 54.7
B 10 245 414063 8155.85 256 249 50.7
B 5 255 141644 2786.75 256 249 50.7
B 0 230 10253 197.17 256 249 50.7
C 3 233 522333 8789.73 247 248 59.4
C 14 238 45558 762.83 247 248 59.4
C 14 254 8643 141.34 247 248 59.4
D 8 195 440333 7119.54 250 242 61.8
D 1 52 365159 5903.42 250 242 61.8
D 12 79 170862 2760.19 250 242 61.8

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