ASTROSAT CZTI

Data Quality Report

Orbit 39064

Creation date: 2024-06-27T21:59:56.317850
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/AS1A12_077T06_9000005430_39064cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39064cztM0_level2_quad_clean.evt
Size (bytes)1,461,245,760329,008,320
Size1.4 GB 313.8 MB
Events in quadrant A13,598,6892,173,588
Events in quadrant B9,201,8802,342,667
Events in quadrant C15,937,7352,084,701
Events in quadrant D13,764,3131,945,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537835
B0416894
C0611224
D0559714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A205445932.886488%
B20544300.146028%
C2054412546.103972%
D205448274.025506%

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 26066 20548 381 381 1.46% 1.85%
B 26066 20548 8 8 0.03% 0.04%
C 26066 20548 1032 1032 3.96% 5.02%
D 26066 20548 699 699 2.68% 3.40%

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 15 222 3318611 7399.18 2237 2194 448.2
A 10 83 1358549 3026.13 2237 2194 448.2
A 13 248 170450 375.39 2237 2194 448.2
B 0 230 116567 266.39 2251 2188 429.4
B 0 213 80573 182.56 2251 2188 429.4
B 12 111 55357 123.83 2251 2188 429.4
C 15 208 6611303 13345.89 2137 2149 495.2
C 15 214 830729 1673.15 2137 2149 495.2
C 15 159 107853 213.45 2137 2149 495.2
D 12 235 3242522 6140.4 2182 2125 527.7
D 2 249 813113 1536.78 2182 2125 527.7
D 12 227 334664 630.15 2182 2125 527.7

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