ASTROSAT CZTI

Data Quality Report

Orbit 49721

Creation date: 2024-12-10T06:22:57.050972
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/AS1T05_233T01_9000006438_49721cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49721cztM0_level2_quad_clean.evt
Size (bytes)1,091,776,32036,794,880
Size1.0 GB 35.1 MB
Events in quadrant A14,050,78988,561
Events in quadrant B3,427,728602,349
Events in quadrant C7,856,313459
Events in quadrant D14,620,2499,015

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457428
B0143421
C0275251
D0474971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5917526688.997803%
B59181542.602230%
C5918591599.949307%
D5918584698.783373%

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 6952 5918 5241 5241 75.39% 88.56%
B 6953 5919 70 70 1.01% 1.18%
C 6952 5917 576 576 8.29% 9.73%
D 6953 5919 5013 5013 72.10% 84.69%

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 6525736 54892.91 436 422 118.9
A 12 50 1023845 8609.34 436 422 118.9
A 6 250 936809 7877.17 436 422 118.9
B 5 49 195508 1470.01 632 613 132.6
B 10 44 145388 1091.97 632 613 132.6
B 4 206 102742 770.31 632 613 132.6
C 15 180 2356891 147941.23 39 38 15.9
C 15 190 1853546 116345.93 39 38 15.9
C 15 197 730867 45874.62 39 38 15.9
D 15 40 4620723 56203.83 224 213 82.2
D 7 61 2480602 30171.42 224 213 82.2
D 15 168 1788314 21750.44 224 213 82.2

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