ASTROSAT CZTI

Data Quality Report

Orbit 52118

Creation date: 2025-05-17T20:45:45.736524
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/AS1C09_011T07_9000006470_52118cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52118cztM0_level2_quad_clean.evt
Size (bytes)871,459,20068,345,280
Size831.1 MB 65.2 MB
Events in quadrant A3,776,479579,760
Events in quadrant B4,462,276600,244
Events in quadrant C7,484,821463,619
Events in quadrant D16,065,9052,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152221
B0174141
C0264264
D0517961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60572183.599141%
B60574206.934126%
C6056143723.728534%
D6056604099.735799%

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 7162 6058 105 105 1.47% 1.73%
B 7162 6057 261 261 3.64% 4.31%
C 7161 6057 1076 1076 15.03% 17.76%
D 7160 6055 5745 5745 80.24% 94.88%

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 3 7 580553 3598.01 643 627 161.2
A 4 3 236274 1462.01 643 627 161.2
A 5 240 79539 489.59 643 627 161.2
B 8 128 426792 3227.45 623 601 132.1
B 5 172 353803 2674.72 623 601 132.1
B 10 254 263378 1989.95 623 601 132.1
C 15 224 3766428 23934.53 571 563 157.3
C 13 3 417676 2651.03 571 563 157.3
C 15 217 340464 2160.29 571 563 157.3
D 15 94 11187237 194159.45 197 188 57.6
D 6 42 3350005 58138.53 197 188 57.6
D 13 170 181648 3149.37 197 188 57.6

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